every design i have built other than the one i sell has overheated in a matter of minutes. to me over 120 degrees is overheating. have any of you had an experience with a configuration that seemed to overheat and run up to like 130-140 and then level off and never rise above that point? i usually cut them off at 120 130 or so but it occurred to me tonight that its possible that sometime it might would level off. i can easily run mine up to 170 safely without any damage so i may just let one runaway tmrw and see if it really is running away