A couple days ago, I purchased a John Deere 2005 model 2210. two stage snow blower, 54" mower deck and a 200cx loader. Nothing was install on it when I took it home. When I tryed the snow blower everything fit perfectly but a little thing bug me. The long extendable drive shaft who quick connect to the output on the pto for front use 2100 rpm and connect onto the little shaft in front/under of the front axle.... That long drive shaft is vibrate like the sun of a gun.... I had an expert drive shaft shop change the front quick connector and also the x joint and I was there when the guy slowly tested it on a lathe and it was turning almost to perfect straight.... I try it again yesterday and it still vibrating !!! I think it is only unbalance and need to have it balance or have you heard about any trouble with that type of drive shaft ???