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(see examples below: left shows large gap; right shows multiple 1mm thermal filler layers for matching)
Most pockets in Cu cooling block are not necessary
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One row of components can't be cooled directly by thermal filler in contact with the Cu block
Some
Some tapped holes for attaching the PCBs to both copper plates in the TXI camera: they are randomly tapped either with the correct thread 4-40, or with a larger one (I suspect 6-32). The problem with the 6-32 tapped holes is that the 6-32 screws don't fit through the PCB holes and 4-40 ones are too small (they just slip inside and retapping is also out of question). By "random" I mean there is no correspondence between the same holes in the two different copper blocks. This is clearly a machining failure.
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