herm-
maybe have some options for your PENN.
u can send your existing reel to Ollie Damon's in Portland for servicing . They're the best reel servicing co. on the west coast. I got an ABu spinning reel and a Penn 320 in for servicing right now. They'll get ya set up. Might be easier on ya then waiting for a used 310 to pop up. Or u can get parts from them as well. They have exploded parts views on all newer reels on their website.
www.olliedamons.com.
good luck.
_________________________
Seaweed Happens