Roller Transport Cleaning Sheets

We run a 20" Colex roller transport machine. We have been using 11x17 Fujifilm cleaning sheets but they're impossible to find at the moment. I managed to get some alternatives that seem like they're for a dental RT machine, we don't love them as they get stuck occasionally. They're sort of like plastic-y paper. Colenta sells some for their units but I can't find a USA distributor!

Any old RT hands know of an alternative to regular cleaning sheets for a C41 machine?

This?

We did have to switch to those but they lack a certain amount of structural stability. We've had a couple jam up in the machine.

Sounds like they're our only option now though.

Hey I use unexposed fully processed and washed RA4 paper from a minilab cut to the right size to clean my Noritsu V30, I have no idea about Colex processors or how they work tho. We just cut the paper into 120 mm Strips that are approx. 1,5m long and mount them onto normal leader cards. Works quite well since the wet emulsion takes up all the gunk.
All the best!