I have a thiokol 603, took it to the mountain last week and had a carb. issue once warmed up. At first thought float stuck as gas was coming out of carb. it wasn't until I was putting snow all over it to prevent a fire that I discovered as soon as I did that it ran fine until the next time. I plan to insulate the lines along with a wood spacer under the carb along with electric pump at tank boosting mechanical pump. also thought about a cold air intake from outside the cab as I think the fuel is boiling in the carb. is the problem area. except for AV gas to solve the problem anyone else have any ideas. Thanks Martin