I remember lots of people talking about this issue at one point but I suck and can't find the thread again, so I apologize. MES40 with legs bought at Sams a few years back. Haven't used it a lot in the last two years or so but worked perfectly last time it did, until it didn't. Plugged it in last weekend and after about 5 minutes it tripped the GFI. Seemed to be warming up fine before that. I have a Pit Boss pellet pooper also that I use more often but want to try a few more ideas on the MES. thanks in advance for the advice!