Hi Vic,I have a b6100, front snow plow won't go up or down, left or right,the actuator blocks are mounted side by side & I pwr washed them last fall & got water in the up/down side,after sitting all winter it sticks in the down position, the 3pt works fine I rotate the handle to the other side work the levers & nothing happens,also do you know where I can buy a actuator block on line or have a part number & manfactuer? Thank you for your help.Ran tractor yesterday,with the handle under the seat & the arrow pointing to the left I backed off the fitting on the pressure side of the hose going to the front hydraulics,no oil,then I pulled back the lever on the 3 pt hitch with the handle still pointing left & oil came out, tightened the fitting & the front hydraulics worked,I'm a mechanic I have the service manual looked thru the that section,this is a good one.