I bought a Husqvarna ZTR demo (48" 21HP KAW) with 63 hours on it. Since it was never registered, I still have the full 2 year warranty. I have 2 problems that maybe someone can give me help with: 1. When starting from a dead stop, and trying to go slow, the mower jumps (like when you were first learing to drive a standard transmission). It may be me, but when I use my friends Great Dane, I don't get this. 2. When I push both handles forward to the stops, the mower drifts to the right. This tells me the left wheel is going faster than the right. What I have to do is push the right handle to the stop, and vary the position of the left one. The mower is under warranty, but I don't want to load it up and carry it in if the fix is a simple adjustment. It's not a big problem, just an irritant. I am a homeowner, and use the mower about once a week on 2 acres. Any help or advise would be appreciated.