I have the midmount version of that machine. Mine is the 428D, a 2001 model with about 600 hrs. Probably can not help you much, however, my experience has been good. Recently, however, the right wheel motor mount and right side of the frame started cracking. Grasshopper has a frame reinforcement kit avail. and it is covered by warranty. My dealer fixed mine better than new in one day. Also, right after I got it, at 42hrs., the electric clutch got loose on the output shaft and failed. A new one was installed, along with a bushing that made it fit better, and it has been fine since. It has been a real dependable machine for me. What kind of trouble have you had?