if you need to use a heat gun for raamat, then i recommend you have someone else install your dampener. i have done 12 cars with all different door styles, roof styles, trunk contours, back wall designs, and have never once used a heat gun.
no need for it. all you need is a utility knife, acetone (to clean the surface), and a plastic puddy spreader.
raamat is the best deadner i have ever used at a price competable with any other out there.
reinke i suggest that you give it another try