1958 regular cub 12 v conversion? this one is 12v i thought all red cubs were 6v , left me walking yesterday for awhile, now ive been using this to mow with and its been very hot approaching 100 and thats a first, im 6000 ft up in the mountains! now it was in some bumpy terrain, and ive been leaning on this cub a little and having to go to full throttle to mow, should have used a larger tractor but i needed to work in a bunch of trees on a acre, since i cleaned the gas tank out completely last summer this one hasn't missed a beat not 1, has gas in the tank, almost full in fact, had gas when i removed the plug on the bottom of the float bowl as well as in the clear sediment bowl, spark was real good, [ guess how i know] now after a few minutes it started right up and idled, when i started the belly mower and advanced the throttle, it quit again,would not hit a lick, 10 minutes later it started up and idled, so i idled it up a steep hill and back onto my trailer and headed back to the farm, so the question is it is obviously is a fuel problem ,is the thing just getting hot and vapor locking? or is there a high speed passage in the carb that may be blocked with a piece of sand ect? this cub was in the desert and its tank had some sand in it last year i cleaned it real good, but anything is possible what should i look at here?