Industrial maintenance I need help

Hi all I am new to the maintenance scene (literally my 3rd week) and I've run into a situation I can't seem to solve nor can my higher ups so I'm hoping someone here can help.

I work at an industrial laundry and we are using Jensen machines. The setup is a Jenferd logic plus, feeding into a Jenroll EXPG 1200, then finishing with a Jenfold Classic.

The issue is the flat sheets that we are putting through our getting crinkled up and jamming the machines. We have tried cleaning, it we have tried waxing it really heavily, we have reposition the machines, basically we have done everything we can think to do and it still happening.

We had our chemicals tested and Jensen said it's not that so we are unsure on what it's still might be. I hope someone out there has an answer.