Hello fellow pelletheads! I just purchased a used Quad 1000 and haven't had any luck keeping it running steady. I have cleaned it, adjusted feed rate, air intake, replaced the thermostat, rerouted and adjusted the thermocoupleand last but not least begged and pleaded with 200lbs of metal to stay running. If I leave it alone, the blower turns on, the cycle starts, auger feeds and it ignites for a small fire, shutdown and repeats. I can hit the reset every 2-3 minutes to get it to burn long enough for the green light to come on and flash. Upon hitting the reset during this I can get the green light to stay on and eventually get the red light to flash. At this point it will burn for a few hours then it shuts down. I have checked the vacuum hose and it is clear, bypassed the vacuum switch by jumping it and there is no difference. It is a brand new vent I installed just 2 days ago so all is clear. I am wondering if there are leaks around the doors as the gaskets are old... Any help I could get from you Gurus would be greatly appreciated!!