Halfway home on our ride Sunday my wolverine overheated. I got pulled over pretty quick and a buddy of mine I was riding with says to me, I bet your thermostat stuck, mine did on my RZR a few weeks ago. Sure enough, a few taps on the thermostat housing with a wrench and it opened up, the engine cooled down, the light went off, etc. 10 minutes later, same thing, figured it had some air in it at this point, tapped on the housing, filled the radiator and expansion tank up, rode ten miles, overheated again... tapped on the housing, light went out, started riding again and it overheated again. By this point we were less than a minute from the house so I just ride it back. Anyone ever have this happen? 6500 miles on my Rhino, 1400 or so on the wolverine and I've never overheated them. Even with mud and dirt packed radiators. Then the local stealership can't get me in till middle of November, so I just ordered the part. And he ordered a temperature sending unit instead of a thermostat. Then he wasn't sure if he could refund me because it was an electrical part. I made sure he was sure after a few minutes on the phone, but back to the point, anyone ever have a thermostat stick like this? It definitely wasn't open because you could hold the hose coming off the goose neck with bare hands before we tapped on it and it opened.