Hi all, I was taking apart the linkages because the sticks were sloppy and left drive function is weak. I've already tried swapping drive motors and there was no change. I noticed with the machine running on the ground the rear pintle lever which controls the left drive was bouncing back and fourth . I am assuming there is a problem with either the high pressure or replenishing valve but not sure which one would cause this condition. This has been giving me problems for a long time and I think I'm getting close to fixing it but dont know what would make the pintle lever bounce like that. I would appreciate any feedback ps the machine was not moving at all while the pintle lever was bouncing. is there a shaft or something that may be worn out?