Randy,
None of those are issues.
As soon as the oven buzzer goes off, pull the tray out of the oven and swirl it around. This will dislodge any boolits stuck to the mesh and dislodges most boolits stuck together. For those that are still stuck together (usually around 4 pairs out of 100 boolits cooked) you can easily break them apart (use a hotpad because they are HOT).
There are minimal mesh marks.
Don't know why the coating would be uneven. I don't find it to be. Accuracy is equal to any other boolits I've shot through my gun (includes factory cast, my own conventionally lubed boolits, HI-Tek coated, and epoxy paint coated).
After tumbling, I dump the boolits into the mesh tray and lightly swirl them around. That knocks of excessive powder, which falls onto a paper, which gets put back into the powder container for future use. That tray then is stuck directly into the oven.