I've started cleaning and refurbishing the components on the Raleigh Lenton, and have run into one problem: For some reason the original owner stuck bits of red reflector tape in various places on the bike. Now, I've pretty much resigned myself to living with the tape on the painted frame and fork (I really don't want to risk damaging the original finish and decals), but would really like to remove the stuff from the alloy bits.

This is the old, classic, hard tape with the silver glue backing. The stuff that, once put on, never comes off. And when you try to remove it, it comes off in little chips.

Anybody have a favorite method for getting rid of this stuff? Speed would be appreciated, but I'm putting a premium on minimizing damage to the parts. Which means I consider using an X-Acto blade and taking off little bits at a time as the last resort.