Don't despair! Help is on the way. Strange, but none of the 'experts' mentioned the fact that you can buy the whole thermostat housing for around $40. No hassle trying to get the broken screw out and no trips to the machine shop. With a new housing you wind up with all new screws.
Bill Lewallen Lexington,Ky. The Bluegrass State Where the grass is really green,and so is our antifreez.