Boy, Hans, you are a better man than I am !
I've tried using a heat gun to unsolder things, and I can't get it to work.
Either the solder doesn't melt, or the board gets too hot an bad things happen (foils
lift, board chars, etc.). It sounds good in principle, and obviously its a matter of
controlling the heat, but I have never been able to get this to work satisfactorily.