On Mon, 02 Nov 2009 08:04:50 -0500, Tom Francis - SWSports
wrote:

I had a similar problem once a long time ago - back in the early '80s
on an oldish 20' Thompson. Had a hell of a time with it until a
machinist friend of mine suggested using light machine oil (sewing
machine oil in fact) to help the process along.

There's a product called PB Blaster, available in just about any auto
parts store, which is very good at this. There's another good one
caled Aero Kroil available on the web from Kano Labs:

http://www.kanolabs.com/