I'm looking at a 95 973 cat loader. Run it today and the two speed isn't kicking into high. Everything else seems to work great. It had both track motors rebuilt in around 2007 by the current owner. He said one motor was lazy so they had the cat dealer rebuild both of them. It's a little lazy taking off also but I think it needs the hydrostat filter changed I don't know the hours on it but it's on it's second set of rails and they are at around 60 to 70 percent. I was told there is a pressure sensor that makes them shift it the high side that can go bad.