I have a craftsman tractor model number 917.254620 and when it gets cold it wont turn over easy at all i had the starter and battery tested and everything came back good, i was told it was a compression release problem, but i would need to tear the whole motor down to do it, so i was thinking if there was a way to convert it to recoil start it has a 12 hp tecumseh in it, or change the whole motor over to a briggs and stratton but dont know where to get cross reference info? Any help would be great