Hello, new member and novice to boating. I have a 15ft Larson runabout with a 65hp Merc. Probly 1969-72. The problem I have is with the shift cable. It wont go into foward gear, just neutral and reverse. I relaced the impeller last fall and the problem accured right after that. I had it in neutral when I removed the lower unit. My question is do you think it's in the control box, the cable, or where it's connected at the motor? I'll spend the money but if I can figure it out I'll take a shot at it. Thanks for all replys.