prep film services in Michigan. In fact I'm packing a box of regular-8 Super Cine-x to send to them now. Last time I sent them a batch including a roll of Fomapan, the Fomapan came out all mottled, but the Kodak film (Cine-X) was fine.
That's because Fomapan doesn't work well in the D-94A process that every other black-and-white reversal film uses. It worked with the original D-94 process, but the new chemistry gives it that mottled look. That's why it's so hard to find a place that processes it.
"Panic not my child, the Great Yellow Father has your hand"--Larry Dressler