Did teching for a number of years. You can usually remove stripped screws with a screwdriver and a small pair of diagonal cutters. You will not use the cutters to cut anything. They will allow you to get up under the screw and apply light pressure as you unscrew the screw. Go slow. Take your time.
Sounds like a good idea. I haven't tried it yet but I will let you know when i get the energy. right now the temps are ok. stock 37/42c
@ to 3.8 it goes to 44/46. Certainly within safety zone but not perfect.