I found posts here identifying a blotching problem and I was able to use that information to determine that my process was suffering the same issue, that is I have blotching in the middle (most often) and occasionally on the edges when I do 6 sheets per reel. Backing off to 4 sheets (back and front no middle sheet) fixes the problem.

Is there a way to fix this? I have used the same process for about 4 or 5 years and this only recently showed up, as in the last 8 or 10 months. I have the 2500 series drum and 2 4x5 reels. I was wondering if it was some sort of chemical build up on the reel that I could clean? or is the acetate base on the film different? I am using Provia and Velvia (50 & 100).

Any suggested solutions to getting back to 6 sheets per reel?

Thanks in advance.