Speedy's Embosser

[Ian]

Hi all, I picked up a belt embosser (one of the old Tandy aluminum ones) to put edge grooves on belts and am having a heck of a time getting it to feed the leather through. Actually, it feeeds better from the back side, but then the strap doesn't stay straight. I tried skiving the end, but that didn't work. So, my question is: has anyone here owned one of these, and what's the gaf on using it?

Thanks

Ian