Call Rudy at D&R Marine
I'd start by giving D&R MARINE a call, 508-644-3001 or check the web-site. Rudy has just about all the parts we will ever need for our O'Days. You could also gat a new casting from a local sparmaker, the tabernacle hinge on the 192 is made from a standard maststep casting for that spar extrusion bolted to the stainless-steel top plate of the hinge.