Hello, I have a 10 hp 1959 johnson outboard that I have rebuilt. I almost have everything working great, but I was trying to shift it the other day while off from neutral, to forward, then reverse. I turn the motor handle into shift mode then on the side of the motor push the lever into the gear I want. Sometimes, the lever will not go completely into forward, unless if I really force it. Other times it will not completely go into reverse and once again I have to force the lever to go into reverse. It is never both at the same time, it's either one or the other. Any advice will be appreciated.