As you know from am earlier post, I received 2 Compadres with both coils, and a Silver Umax. Problem is that when I turned on the Compadre with the 8" coil, it started acting really erratic. I went outside to see if EMI interference was the problem....it was not. So it looks like I am gonna have to call Tesoro and send it in to get it looked at. I haven't even sent in the warranty card yet lol. Has anyone else had problems with their Compadre with the 8" coil? I have seen 2 youtube videos of people with the same problem. Might have been a bad batch of coils maybe?