I'm running an ancient Stahl folder (no idea what the model # is, the decals were pried off long ago) that gives me no end of headaches. Recently I had trouble with 100lbs gloss stock with full coverage toner. The paper kept slipping around and passing through the rollers at odd angles giving me widely varying results. One of the old salts who used to run the machine came in and helped me re-calibrate the bloody thing. Since then the heavier stock has gone through just fine, but I've had trouble with regular 24lbs bond. The machine, seemingly at random, crimps the second fold when doing a standard letter fold, crunching up the paper like the rollers are set too tight. It does this even when the rollers are so loose that paper can pass through without any resistance. After re-re-calibrating the rollers the issues persists.
Any ideas?
Any ideas?