Hello I need some help I was cutting with my Groundmaster 325 (not sure what year but it is probly 1980's) the hydraulic lifts the deck and also drives the mower. I have to push the pedal all the way forward with the throttle wide open to just make it crawl. I looked under at where the linkage connects to the hyd pump and cant tell what it is doing wrong. I checked the oil in the pump (it does leak) and it is good. the deck lifts fine. I am pretty sure it is something with the linkage since the pedal is extremly easy to move. I just dont know if I should adjust the linkage (tie rod end style adjuster) or if something else is out of whack. Thanks for any help.