some of my fletchings came off and i was wondering if there was any certain way to get the old glue off of the vanes without damaging them?

t3--you'll struggle getting good adhesion trying to reuse oldvanes. You're better off getting yourself some new vanes and save some time and agro.

Yeah you definitely don't want to be trying to reuse old vanes. Frankly it's just not worth it - if a vane comes off on your release you just spent a new arrow at about $5-$10 a piece for arrow and .15C for a vane you don't have to be a rocket scientist to know its not a good trade-off.