I just bought a 200 nitro 901 with a mercury 200 efi first trip out ran up the lake fine on the way back to the lake felt something and lost power restarted motor and noforward or reverse got boat on trailer put motor in forward and reverse feels like ti is going into both gears prop will turn one direction and not the other haven't drained oil yet but going to do it in am any advice is apreciated as I am a mechanic but not real familiar with outboars.