I'm replacing original engine compartment soundproofing (foam with mylar sealant) from 2000 Ben 3.61 and having difficulty removing residual adhesive after getting the old foam insulation off with razor scraper. Any recommendation for adhesive removal product that really works? Unsuccessful attempts so far included DeBond Corp Marine Formula and 3M General Purpose Adhesive Cleaner 08984. Admittedly, these were done in pretty cool temps, but neither cut the old adhesive very well. Any suggestions appreciated. Thanks, Pinch