With the old relays when we were in northern Quebec 4 sleds started and we went for breakfast, came out and none would start, all with frozen relays. The doo guys were having fun. Got them all going by warming them by in my hand. I've since changed to the solid state relay and haven't had a problem since. All the guys have since changed to 4stroke doo's and they are happy. I still ride my Attak and love it even more since I got my shock rebuilt by Shocktec. I love the pull from the 4 hole'er, and it sounds nice with the exhaust drilled. Those Doo's sound like a F'n farm tractor. LOL. OK I've had enough beer.