The coupler on my BX2200 54" mower deck came off the pto during use causing the driveshaft to whack the hydraulic fiter and punture it. While replacing it I notice that the force of the driveshaft has stripped some of the threads off the stud that the filter screws on causing the new filter to not tighten completley. It doesn't look like the stud is one piece and is part of the casting. If I rethread the stud, would the factory hydraulic filter still fit. I'm in dire straights!!! I can't imagine the price of a new front casing! Any help or info would be greatly appreciated.