My 2 cents -- There is a product on the marine market that is great for aluminum repairs. It is a 2 part epoxy called marine tex. It is good up to 600 degrees and can be drilled and tapped. It is very easy to work with and can be easily shaped with sand paper. Can be molded to conform with...
I live about 5 miles from these clowns and drive all the way to Porterdale to Shots Fired. They are a class act!!!!!!
Won't spend any of my money at Heritage.