Crestliner

I have a 1979 Crestliner with Mercury 1400. Has good motor on it, it's has alot of new parts on it. Has brand new ignition control box, brand new wiring hardness on the boat side and engine side, also has brand new spark plug, water pump been replace, There is two thing wrong with one his the hydraulic pump seal are no good and there something wrong with the throttle cable but i have not gotten to get into to see what wrong with the throttle. But i do have title for the boat and but don't have title for the trailer.