Throwing in the towel. Dealer "fixed" right rear axle seal @ 415 hrs. and supposedly "upgraded" this POS tranny at the same time. Well, fast forward to 578 hrs.---tranny is again leaking oil slowly from somewhere. The right rear wheel has NO power at all (3 other wheels spin on snow), and binds enough to stop mower in it's tracks occasionally, and replaced both glides steer cables (again).
$1,200 to fix 15 hrs. out of warranty 3 yrs. ago (ended up being $750 after "discount"). Also, the shaft coming out of tranny that receives power from engine has play in it also. Very disgusted w/machine. I'll miss the diesel engine, but not the headaches that they put with it. Going back to a Cub maybe or a used JD diesel if I can find one. I take care of my equipment/do not abuse it.