so far the rheostat is actually doing really really well.. It has the high down to 95... That is the hottest point on the glass, You might have just had a bad rheostat..As my father says it is all machines,, and machines were built to fail.. So who knows but thank you so much for all your advice from everyone... I got everything together now.. I even put the alumni. On the top so i really appreciate all the help. AND I will always come back here everyday.