C3760dn Jam Tray 1

I have a C3760 with about 20k pages on it. It has been performing flawlessly.

Last friday it stopped pulling from Tray 1. Trying to print a job from Tray 1 yields a "paper jam" error. However, there is no jam. It appears the printer never actually pulls a piece of paper from the tray.

I have inspected the various places looking for a small piece of paper, etc. to see if there is an actual 'jam' somewhere, but I cannot find anything.

I can print from the manual tray fine, no problems. I can set the manual tray as the default, and print all day no issue. However, any attempt to print from Tray 1 though will yield a paper jam error..

Any ideas on things to troubleshoot further? There does not appear to be any broken pieces on Tray 1 from what I can see.

I am trying to narrow things down before I start shelling out a lot of money on items I may not need to repair it (at which point, I should simply cut my losses and instead buy another printer.)

Thanks,