I recently purchased a used JD 3026r with a quick connect 72D mower. It also has the front 3 point hitch and PTO for a snow blower. When I installed the mower deck, it is high in the back but the front skid show still rubs the ground. I cannot figure out how to level the mower from front to back. It also has the electric switch in the joy stick to raise and lower the deck. It is connect to one of the hydraulic valves on the back. Anyone have any ideas for me to level the deck? Thank you.