Ok, so here is a picture. These are the 2 worst cavities. Nowhere else in the cavities is there significant lead except the bottom of the bands at the block face. The grey in the middle, top band, of the right cavity is light from a window. Most of the guys having no trouble are running higher alloy temps. I will try that as well as seeing if the lead will wipe off with a cloth rag once the blocks are heated.
I shot bunch of 429421s yesterday and don't think it's quite the boolit the MP 432256 is so I've got to get this figured.