I want to replace the clam cleats for the jib sheets with cam cleats. Do the clam cleat screws screw into a backing plate, or do they have nuts and washers? If I take the screws out is the plate or nuts going to fall into the abyss and then I have to cut holes in my headliner? I also want to add a second rope clutch on the starboard side, my 240 had access covers to get to the back side but the 260 doesn't.