Sure hope you get this resolved. I got my Featherweight from Ebay back in 1998 or 1999. Back then I didn't know much about them, but was fortunate to find replacement parts for what was missing, just little things. Mine works like a dream, she is dated 1956. I would love to find a scroll faced one and have her repainted in RED!
There really isn't much other than the motor, that breaks on a Featherweight - hopefully your problem is just a matter of adjusting something that may be out of whack. Keep us posted and good luck.