I have a 74 Evinrude 70 HP that I had a lower unit go out and i bought another one off of ebay but I put it on to find out that it is a reversed gearcase for I'm guessing a twin outboard. Does anyone have any ideas what I could do other than getting another lower unit? My local boat repair shop told me that I could try and find a dual control box but I haven't been able to find one of those.