First time here… i picked up a second hand PB820 the other day. After first power up, noticed igniter wasnt working so replaced that. Went ahead and replaced auger motor while i was in there. Test pit and everything is working great. Let it run for almost 4 hours without fail. Decided to throw some ribs on and within 5 min the breaker tripped. Huh?? Reset and it tripped again within 2 min of start up. It got dark so i left it alone for the night. Came back next morning and it fired right up. Let it run for 2 hours, shut down for a while then fired it again. This time i let it run all day, went through a hopped full of pellets. Threw a pork butt on and within 5 min the breaker tripped. Why in the world does this pit only work when there is no meat on it??? Thinking control board or a hidden meat sensor on this thing