hi. I have a bx22, 950 hours. because of leaks dealer changed all hydraulic lines last february. last week my hydraulics stopped working and I noticed hydraulic fluid dipstick dry again. refilled and everything was fine. yesterday I snowblowed my driveway and had no problems until I tried to blow a small patch of packed snow/ice. couldn't do it, so backed off. but shortly after I noticed I had reduced power in low (turtle) gear. tractor moves, but a single (slow) speed. there's no speed control in the HST pedal. but tractor does seem to work normally in high (rabbit) gear. is this like a linkage problem or transmission problem? anything I can check myself? (I'm changing dealers...)