Hello and thanks for adding me to the forum. I just bought a 1993 B7100 hst. The tractor is in great condition with only 1033 hrs on it. I replaced the oil and filter, hydraulic oil and filter, front axle gear oil, new antifreeze, new air filter and fuel filter. I cleaned the treadle pedal linkage and lubed it when I greased the tractor. My trouble has been addressed in different threads as near as I can find. The pedal never centers up to neutral on it's own. Changing the hydraulic oil and lubing the linkage helped but has not cured the problem. There is a threaded rod beside the hydraulic oil filter that connects to the centering spring. I screwed the nut down on the shaft to increase tension on the centering spring, but it was already about a half turn away from being tightened clear down to the limit of it's travel. Now after that adjustment if I reverse the tractor and let up slowly on the pedal it will come to a stop on it's own. But going forward it slows to a creep but never stops unless I press the pedal towards the reverse side. It's a pain trying to maneuver in tight spaces. I sure could use some pointers on how to correct this. I thought about a couple independent springs on the pedal to help center it, but getting them correctly tensioned to work would be very difficult. I just downloaded the service manual but haven't gotten it printed off yet.