newby here. I just bought a Mercury 110, 9.8hp. Very clean. Engine runs great, but no water is coming out of the tell tale. I removed the lower unit to check for an obstruction, to my dismay, upon replacement, I only have forward gear. Reverse and neutral are gone! I'd say the motor is early 70's or so, i haven't determined that yet. What could've went wrong? It still doesn't pump water, so I made my problem even worse now. Where should I start looking? What happened to the other gears?