i have a 2006 36'' mini z. 308 hours. its been in the shop now for a month for oil leaking from both hydros. it took 3 days to diagnose problem. supposedly a week in a half to get approval for the warranty work. and now its been another two weeks waiting on parts. they say they are ordered but they dont know when they will be in. so my question is, are the zt hydros available for this mower? i'm beginning to think there not because my dealer should be able to get a tracking # to find out where they are.