Extremely crazy problem! A million rep points to whoever helps me!!!
Single sided prints work 100% of the time, on duplex prints everything works perfect up until the paper enters the fuser for the 2nd time. The paper is actually not going in the fuser, but turning around and accordion jamming.
I've stopped the print job right before the paper goes in the fuser for the second time. The paper seems positioned perfectly, its not skewed at all.
It results in a JAM 47. Firmware up to date. Even the Kyocera tech support can't give me an answer.
When I use thicker paper, it works _rarely_ maybe 15% of the time, otherwise same jam. I've tried 5 different types of paper and thickness settings, all same problem.
I am completely stumped. Both fuser rollers were replaced and nothing hardware related looks damaged!
Thank you _so_ much for anything at all.