Using my Pit Boss pro 1100 for the second time. Literally the second time using a pellet grill. I assumed the over heating was a user error the first time I used it. Today I got it started up turned it to 350 and it shot up to 500. I turned it down to 250 and it hung around 475 for awhile and I finally dropped it to smoke till it got to 300. Very frustrating is this normal? Will it always be this much of a pain in the ass to grill a few steaks armadillo eggs and bacon wrapped asparagus? What can I do?