I'm glad to find this group. My toolcat (B, I think) also has a problem in that it can't hardly pull itself up any incline. I'm at about 300 hours and the problem has been getting progressevely worse. In fact tonight it wouldn't even start moving in high range on my level driveway. Mowing up any incline (in low range or work mode of course) seems to slow the blades enough to detiorate the quality of the cut. I don't think my problem is solely secondary to overheating as the issues are present even when the machine is just started and still cold. I'm hopeful that the shop canfind the problem, I don't see how they can overlook it at this point. My coomon sense tells me the problem must be in a main hydraulic pump as all systems seem to be affected. Any suggestions welcome.