Just started this last night. Was idling to boat dock and shifted from forward to neutral as approaching dock. When put it back in forward the engine died. Started back up, tried to put in forward and died again. Tried this several times and kept dieing. It would go into reverse just fine. I then raised the motor out of water to make sure nothing wrong with prop. Everything looked ok, lowered motor back down, started and this time went into forward fine and ran until put it back in neutral and then tried to go back to forward. Any ideas?