When I first turn it on, it runs great.  It builds up air pressure to about 75psi, then kicks off.  It never kicks back on.  I have to turn the switch off and wait for 5 to 10 minutes. It runs tools great until the psi drops and it won't kick back on. I have tried turning the regulator knob to max, but nothing seems to work. Please, if anyone knows what is going on email me some help- cewell757@cox.net. Thanks very much