I have the essentially identical vessel, a USY 305. In the end, we had to cut the quadrant off in order to service the stuffing box and beef up the rudder support system which, I presume, is the same as yours: a laminated marine plywood ledger (stringer) that is tabbed to the transom. I will have to have a machine shop create a new quadrant end. How long have you owned this boat? Wm