Riso GR3770 Paper Jam, Check paper feed

I got an adhesive label stuck up in the center of my paper feed. Long story, short, I have to disassemble the paper feed to get to where the label had come off. I thought I had all the label off and the machine put back together, when I found after it feeds a sheet of paper, the machine stops (without making an impression on the paper), and slowly ejects the sheet; error message; Paper Jam, Check paper feed.

Any suggestions?