I, too, have a 28.5
with a Merriman Pedestal (that fortunately is in good repair). My suggestion for parts would be to canvas all the consignment stores in your area; post "wanted to buy" notes on the "Gear For Sale" board on this and all the other electronic sites you can find; and if all else fails, cruise the auction sites and boatyards that are selling damaged boats for parts. You might also post some ads offering to buy someone's old pedestal who is upgrading to an Edson. Good luck.