Hi guys

I have noticed lately that I have had reticulation problems with some of my film. I had just processed a set of fuji provia and some color ir film together, and while the fuji came out fine , there are traces of reticulation in the color ir, like a background graininess
It does seem to be a much thinner film than usual, and to be honest I forgot the pre-bleach step ,but I thought both would have the same problem. I did the final rinse with formalin
any ideas?
rob