Just bought a Super Z (older Model) to help with my field that I mow. Guy broke axle on left side, had it welded back and sure they went bout it all wrong. My ? is if it has a leak in left side will it affect the rest of the system? It is slow, don't climb hills good, slow response all together. I thinking in hyd or maybe motor weak. mower has a v twin kolher 30 hp. Changing left wheel motor if I can find problem with few other things that gonna check into this week. Thanks, Broncoc