I noticed during a dark engrave that for most areas of the bed, the air flow tends to be downwards. This causes smoke to be deposited on the already engraved and unmasked areas. Switching the engraving passes to be top to bottom, or at least having that as an option, would lessen the cleanup work by leaving the deposits on the masking.
The air assist does blow that direction and I think that the directional change request is “in the hopper”.
Thanks for the suggestion. I’ve passed it on to the rest of the team!