Are you curing your baits before bagging and oiling? My smaller baits are put on cookie sheets and slipped into the fridge over night. Larger small-baits get two full days in there. Larger baits are laid on white cardboard and put in crisper drawers for a few days. In the winter up here mother nature takes care of this in a big way, but baits should be cured a bit before bagging and oiling. I have had the same issue with large baits but only certain colors and colorants by maker. I haven't seen this using the X2 colors. In some locations humidity might be a factor. Right now where I live in Minnesota I almost need gills with the humidity we have along with dew points approaching 80 degrees. I keep my finished plastics in a dehumidified room when they come from the fridge.