We have recently had the l/u off of our Honda 75 for repair and to replace the impeller. Upon re-installation, we turned the splined shaft to neutral, as well as the (remote) gear selector. After installation, the motor will go through F-N-R, but grinds while going from neutral to either forward or reverse gear. This happens two or three times, then neutral and reverse do not work altogether, and the prop spins in the forward direction regardless of what position the remote gear selector is in. Any help is greatly appreciated.