I need help figuring out whats wrong with my skid. The main arms can't lift much maybe 500lbs and lifts slow. Same with arms that pull bucket forward and back. The wheels now can bog the motor while turning and pulls good. Do you think its the pump or the hydraulic cylinders? I kinda reasoned that sense both sets of arms are weak it may be the pump. If so how much do those run and wheres the best place to get pumps. Should I upgrade to a stronger pump. Man I love this thing, it can do so much around the house. Are they hard to change with medium amount of mechanical? Also it has about 3600 hrs. thanks RAndy