I've had my TC30 since last July. I've not used it too much, but I have noticed that the HST pedal doesn't usually return to neutral when I take my foot off the pedal. It has the treadle pedal, so if I'm going forward sometimes I need to move my foot back and just touch the rear part to slow or stop it. This only happens when it is running. It returns quickly and easily to neutral when the tractor is off. I read that I should keep it above 2000 rpms, but it still does it over 2000 rpms. I have greased the pedal fitting and lubed the return spring mechanism. Nothing seems to be binding in the mechanical parts. The hydro system otherwise works great and doesn't make any odd noises. Any and all ideas are welcome.