Anyone know of a good source for neoprene (or equivalent) "tape" for bedding/padding fuel tanks? I've searched the web and all my aviation catalogs to no avail.
Any ideas on a substitute for neoprene?

I'm installing some 7 gal. Mini Max tanks in the wings of an Indy T-bird I'm building, and I can't build the mounting frames until I pin down the exact dimensions. Without the bedding in hand I can't move forward.

Thanks, guys