After trying Goof Off and a few others I finally found something that worked. Used an acetone rag to soften the glue/remaining hard plastic, scrapped off what would come off with the plastic scraper, then hit the softened glue with an eraser wheel. Worked great. Just make sure if you end up doing this that you do not just buy an eraser wheel and put it into an normal die grinder. The wheels are only rated for 4,000 rpm and most normal die grinders are 18,000+. No fun buying a one trick pony tool but without it there is no way I would have gotten this off. I had one of these slow rpm die grinders from Finish Master back in the day but the one I used on this project came from Aircraft Tool Supply (ATS). Short of buying the specific eraser wheel tool I have not been able to find a slow RPM die grinder.
Acetone rag sitting ahead of work area to soften the material to be removed.
Plastic scraper to take off any large flakes that would come off without a bunch of pressure.
Eraser wheel tool to remove softened glue. It was possible to use only the wheel with no acetone but it required alot more pressure on the skins and I was worried about denting/bending the skin. The acetone solved this by making it easier to remove.
New plastic protector on. This required a 10' piece and had a little left over.
RV-10 bought not built (Thanks Carl!) www.N7ZK.com
"How's it feel to be the fastest plane in the sky? You were spanking two Cirrus planes, a Mooney, and another plane. I took screen shots" - Quote from the best wife in the world.