torch is safer then heat guns. this vid would be quicker switching to map gas and a TS8000 tip. wider and hotter flame lets you back the torch up more while shrinking more. 2 or 4000 tips tend to burn film more, leave those for the plumbers.
might attempt some new vids soon, walking better now, can handle couple hours out of bed. couple years catch up on house and yard work talking a bit of my time.