Can someone explain this puck before I invent a theory?

[Footwork 63]

Machine / revision: Lelit Mara X V2 2024
Country / voltage: Ireland / 230V
Grinder / burrs / setting / calibration: DF64 Gen 2; stock 64 mm flat burrs; 11 on my collar; chirp point marked with tape.
Basket / portafilter: stock double basket with paper filter; stock portafilter with double spout (58 mm system where applicable).
Bean / roast date: Guatemala Huehuetenango medium roast; roast date 2026-07-20.
Dose / yield / extraction time: 19.0 g in, 38 g out, 30 s target/current reference.
Water / temperature: filter-jug water from moderately hard tap; factory brew temperature after a 10-minute preheat.
Exact symptom: Medium roast still tastes sharp and hollow at the current ratio.
Tests already performed: Try the same puck at a slightly higher temperature or longer ratio, changing one variable only Already cleaned the obvious removable parts and repeated the test once.
Diagnostic photograph or video: photo of the grinder setting and a short shot video.

The numbers look respectable and the cup does not. The Lelit Mara X V2 2024 has therefore chosen to make this personal. Medium roast still tastes sharp and hollow at the current ratio.

[Footwork 63]

Confirmed solution: I kept the dose fixed, went a little finer and extended the yield. The sour edge disappeared without changing three things at once. I am leaving the original numbers above intact so the next person can see what changed.

[Absurd-Adjuster]

Short answer: Start with the simple reproducible test before buying parts.
Applies to which model/revision: Lelit Mara X V2 2024.
Likely cause: The symptom points first to a setup, wear-part or calibration issue that can be separated from a major failure.
Test to perform next: Return one variable to a known reference, repeat twice, and record whether the symptom changes in the same direction.
Expected result: If that subsystem is the cause, the symptom should change predictably rather than randomly.
Safety limit: Do not chase the shot with unsafe pressure/temperature modifications; return to stock limits if diagnosis becomes uncertain.
Evidence: First-hand owner experience with the same model/configuration; not a manufacturer diagnosis.

[Motorcity74]

The useful documented check is the revision-specific maintenance/service sequence, not a generic espresso-machine video. For Lelit Mara X V2 2024, verify the manual procedure and part number before opening or ordering anything. If the documented test does not reproduce the fault, stop treating that subsystem as proven.

[Dialect]

Not the exact revision, but I had a closely related setup with the same general failure mode. The thing that saved time was separating the DF64 Gen 2 / puck-prep side from the machine side instead of adjusting both together. Similar experience, not proof for your unit.

[Bookish92]

If you can post the short video mentioned in the opening block, the sound/flow pattern may separate a normal Lelit Mara X V2 2024 noise from the fault you are describing.

[Ghosthouse]

One small follow-up: repeat the test from a cold start once. Heat can hide or create a fault, and “it worked five minutes later” is useful information.

[Moisture 2000]

Inference only: because the symptom is repeatable and your listed tests already rule out some obvious causes, I would suspect the narrowest remaining mechanical/setup path before a board-level failure. I would not buy a part from that inference alone.

[Wire And Gloves]

This is a good example of why the exact revision and test history matter. “My Lelit Mara X V2 2024 is bad” produces twenty theories; the measurements above at least give the theories somewhere to die.

[Prison Book Bars]

For what it is worth, please stop posting clean drip trays. Some of us are trying to live honestly

[Ghosthouse]

I had a similar issue but not the same revision. Mine ended up being embarrassingly simple, so I would keep the easy checks alive until the evidence kills them.

[Object Biography]

I had a similar issue but not the same revision. Mine ended up being embarrassingly simple, so I would keep the easy checks alive until the evidence kills them.

[Absurd-Adjuster]

I had a similar issue but not the same revision. Mine ended up being embarrassingly simple, so I would keep the easy checks alive until the evidence kills them.

[Object Biography]

If you can post the short video mentioned in the opening block, the sound/flow pattern may separate a normal Lelit Mara X V2 2024 noise from the fault you are describing.

[Object Biography]

For what it is worth, if the answer is another $80 piece of metal I am going back to tea for twelve minutes

[Absurd-Adjuster]

Please stop posting clean drip trays. Some of us are trying to live honestly.

[Moisture 2000]

I came here to save money and now I know what burr touch means. This has gone badly.

[Dialect]

One small follow-up: repeat the test from a cold start once. Heat can hide or create a fault, and “it worked five minutes later” is useful information.

[Prison Book Bars]

For what it is worth, my technical contribution is that “one last upgrade” is not a measurable quantity.

[Wire And Gloves]

If you can post the short video mentioned in the opening block, the sound/flow pattern may separate a normal Lelit Mara X V2 2024 noise from the fault you are describing.

[Object Biography]

I had a similar issue but not the same revision. Mine ended up being embarrassingly simple, so I would keep the easy checks alive until the evidence kills them.

[Moisture 2000]

The useful bit in this thread is that nobody has to guess which Lelit Mara X V2 2024 or DF64 Gen 2 is involved. Half of repair advice goes bad before that point.

[Ghosthouse]

One small follow-up: repeat the test from a cold start once. Heat can hide or create a fault, and “it worked five minutes later” is useful information.

[Absurd-Adjuster]

If you can post the short video mentioned in the opening block, the sound/flow pattern may separate a normal Lelit Mara X V2 2024 noise from the fault you are describing.

[Motorcity74]

If you can post the short video mentioned in the opening block, the sound/flow pattern may separate a normal Lelit Mara X V2 2024 noise from the fault you are describing.

[Absurd-Adjuster]

One small follow-up: repeat the test from a cold start once. Heat can hide or create a fault, and “it worked five minutes later” is useful information.

[Author]

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