The method Art posted (acetone and sandpaper) has saved me a LOT of points over the years--used to pull them off on a regular basis before that. Weather here hasn't been quite that cold, but I've been shooting in below freezing weahter and haven't lost any points, and I never re-glue mine. I've been using regular old Fer-L-Tite, but going to try a different glue next time, that's supposed to stay more flexible/less brittle. Think it came from Kustom King.

Don't think Loc-Tite would work too well on wood shafts, but I haven't tried it.

Chad