My locaL dealer installed the Kioti SL2410 back hoe, and it works great. Today I unhitched it so I could install my tiller, and found that the 3-pt hitch no longer lifts. I can move the arms up and down with one hand, with no resistance. Moving the black control knob to either extreme makes no difference, and the fluid level is OK (I topped it off). The other hydraulics work fine (front end loader), the only thing that doesn't work is the 3-pt. Anybody else experience this?