We "resurrected" one of our old spare curb machines a few years ago after our regular spare went down.Anyway,many of the links on it were stuck, the ones that had been buried in the mud were the worst.Not knowing exactly how frozen yours are, mine would bend going around the sprockets and idlers,just wouldn't bend all the way.I mixed up some diesel fuel and used automatic transmission fluid in a 5 gallon pump-up sprayer and had at it.Ran machine for a while and kept on sprayin' the juice to 'em,took awile ,but they did free up just fine.Now,my curb machine tracks are not nearly as heavy as those on a 933,and I'm sure someone on here will have a better idea but,that worked for me.