Unicolor 2 bath c41 kit white residue

[charlotteRF]

I've been having nothing but troubles with residue left on my films with this kit.
Now this is my first times processing color film, as a heads up, I'm asking if this is user error.

I've processed 6 rolls of 110 film, 1 roll of 135, and 1 of 120.

The powder was mixed with distilled water in clean glass bottles

I process as per the instructions at the correct temps and times, I wash with the ilford method with tap water, and then use a correctly measured amount of foma fotonal in distilled water as the final step, I take the film off the reel and hold diagonally to let excess water drip off, then I hang to dry in a warm bathroom.

Every single 110 roll I've processed has had white residue on it, and even rewashing in just distilled water does little to get rid of it.
This photo is after processing, washing, finishing washing with wetting agent, overnight drying, then rewashing with distilled water when I realized there was residue, this is 3 hours after.

The first roll I processed of 110 was coated so thickly in white residue it was like a crust, but that was the only time I used stabilizer, I read it could cause issues in some kits, I've stopped using stabilizer, this reduced it to the level seen in the photo.

The 135 and 120 rolls I processed had no white residue and no problems at all.

I don't have this problem with B&W or B&W Reversal processing, I'm only having these issues with C41. I havent processed enough 120 or 135 to confidently say its just my 110 film but its a strange pattern

Does anyone have any insight on what I could be doing differently?

 

[koraks]

I'd start by leaving out the fotonal final rinse step and instead rinse in demineralized water. See if that makes a difference.
Issues like these on film with a smooth backside (e.g. 35mm) generally go away if you wipe down the shiny side right after hanging the film to dry, but not everyone likes this as they're hesitant to touch the film when wet. YMMV. I personally use tissue paper to wipe down the shiny side of 135 film. For me, this is the best way to prevent any marks.

With the affected film, here's something you could try: make a dilute solution of acetic acid (a dash of cleaning vinegar to a jug of water). Wash the affected film in this solution. Then wash it again with clean water a couple of times to remove the vinegar; 2-3 changes should suffice. Hang to dry, see if the crud is gone. If so, the residue is probably scale (calcium carbonate); this dissolves in acid (think of cleaning shower cabins etc.) The acid won't harm your film.