After trying in vain to get a repair person over and take care of this. Sorry cant wait 10 days just to diagnose. I decided (yet again) to do it myself. I replaced the heater core which was really bad on inspection, along with the thermostat and limiter for good measure. Very straightforward repair, and as long as you follow the instructions you wont have any trouble. Didn't even take much in the way of tools. Saved enough money on this repair to buy myself a nice drill press. Dont forget to unplug the dyer.