A status report on this project-
Several applications of Gorilla tape, double thickness,rolled and left overnight, raised a just few specks of paint.
Mineral spirits and alcohol had minimal effect. Krud Kutter Tough Task Remover had no effect.
I then tried Goof Off spray can graffiti remover because the can said safe for vinyl, and this worked well, but was laborious. Spray it on, immediately work the surface with a moderately still plastic bristle brush, and immediately blot/wipe it off. It took about five cycles to remove all of the paint. This process did not seem damage the tolex at all- amazingly strong stuff, or dissolve the glue. It took four cans to do the head cab. The contents in the can were different with the different cans labeled with same name- some cans had a very volatile thin liquid that evaporated in a couple of minutes that I would not use indoors, some cans had a thin gel that had a mild citrus odor and left a residue that needed to be washed off. Both were about equally effective in removing the paint.
I am very happy with the result. The paint seems to have protected the tolex, which looks like it is a couple of years old.
http://jdramps.googlegroups.com/web/BMasterstrip.jpg