I'm thinking about buying an 04 f6 carb next year. I don't want people telling me go with EFI! I just want to know if its going to hurt the engine any if I ride in -10 one day then 40 degrees the next. I understand that it will lose some performance because I don't feel like changing the stock jets. I just want to make sure it isn't going to do any damage to the engine if that temperature isn't right for the jets. Also, if I go WOT about 2 miles across a lake every morning, is it more likely to blow up with crab or efi?