Merc rhino riderII with original controls and 9.9 Mariner longshaft on it. Have 85-87 Merc 25 tiller motor. Boat will handle 25 with remotes (15 with tiller). What's likelyhood of cables and other stuff working or is the cost of various parts and availability going to make me want to switch back so I don't waste the rest of the summer. Looking for experience, not advice that its all available unless you know the differences. Thanks. mike