I have issues with Maco on only one point. I need to use wooden film holders. The dark slides are ir tight, but the plastic around the holder isnt. Wood film holders work wonders.

I also develop Maco in PMK with 2+4+100 (double the normal amount for 12 minutes at 24C.)

I've had folks ask if my 6x7 negs were 4x5 regular film type negs. Low grain. It's panchromatic film, not ortho, so without a dark filter they looks like regular film images.