Have this gear drive b7100 with b219 loader and b670 backhoe The loader has his own pump in the front and the backhoe has a pto pump I remove the backhoe and bought a 3 point hitch kit from ebay that fit nice in the back. Lower the arms with the 3 point hitch / with the help of the screw that you adjust the speed down for 3pt Now i can move up and down the 3 point hitch by hand easy but not with the 3pt level -it will not rise up Any help please