Yesterday I picked up my new 3rd mower. It is a TORO hydro wb 36" with a 15hp Kohler. Minutes into my first job I notice that the right side will barely go in reverse. (pretty much just won't reverse at all) Also, when I throttle down to around half, the pump sound aweful. It clacks and rattles loudly. Obviously, I will be taking it back, but does anyone have any idea whats going on? Am I perinoid-does it just need to be adjusted? I checked the fluid, it was a little low - I added - no difference. On a second note - I haven't purchased a sulky yet. Any suggestions? I have only used jungle wheels in past, but now with a Hydro, I was thinking TRU TRAK.