So, I have a top flite heat gun that I use to shrink the film on my planes, but it's behaving erratically, and has been getting worse. Basically, the fan runs as it should but the heat coils won't always come on. If I 'finesse' the switch (move it just off the 'click point' or push in/down/hard/soft/etc....) the heat will come on, but not always for long. Has anybody had any similar experiences or can anyone suggest a fix? I don't really want to go buy a new one, but I prefer to use it over a hot iron. Before taking the durned thing apart, I was hoping somebody could shed some light (or heat) on the subject.

Thanks!