Make sure you are on the flat of the floor, check the Clearance to the outside chine area of the hull. It will need to sit in on an angle slightly to get the right alignment. You can also install the cable out the rear through the area by the gear shift, with a rubber grommet. Seal the screws with some form of Resin would be our suggestion. Set the screws into Epoxy or similar material. Use only Premium or Platinum cables from Mercury. Also on the throttle cable we believe from memory it is a 14 cable, though measure it to be sure. BCB