Hey guys. new to the group here. I have a troy bilt 42" colt. The right side control quits working after a few minutes of running. ( almost landed in the creek this afternoon),Feels like it is low on hydralic fluid or weak. could not back up or move forward using the right control. could hear a whinning noise from the pump. works somewhat ok on flat surface Is there some place to ck the fluid or refill or is it going bad. If it's going bad, any place online to buy one resonable. thanks