I just purchased a 1998 Hustler Range Wing 12' mower with 2 wing decks. The inside two hydraulic pumps on the wings are turning the blades backwards. Everything looks to be hooked up correctly. When the decks are up I can spin every blade easily in the cutting direction except for the two inside blades, they turn easily backwards. I'm stumped! When I called our local dealer they said to change the lines on the pumps. I was told it mowed fine when last used and it all appears to be factory plumbing, not altered. Any help would be greatly appreciated! Thank you!