I tried another experiment last night.I heated the glue film with my heat gun until the surface of the shell was mildly hot to the touch, then I immediately took a length of duct tape and applied it to the heated areaand pressed it on the shell firmly. Then slowly peeled it off to pull the softened glue film with it. It worked on some areas pretty well. Not sure if there is an optimum heat to use for this technique. I think a tape with an even stickier backing would work better.Mark
Now that is an interesting idea.