I have a 2008 toro z master with a d902. Im having problems with misfiring and sometimes overrunning. Intermittently of course. I have it at my local dealer to diagnose. They have said the injection pump isn't sending fuel to cyl 1 and its $1200+. Does any have a shop that rebuilds these or am I just gonna have to bite the bullet here and buy a new one? Engine only has 400 hrs. Thanks