I have this motor i bought and went to look at the gear oil to see what shape it was in and i think i removed the shift pin. I assumed it was the gear oil filler up spot because of some red sealent around it and pulled it out, gear oil came out but when i went to put back in it would not go in. Looked at the screw and its like an inch long with threads only on the top 1/4 inch. If its the shift pin is that a big thing to get back in? Please help me, or point me in direction to how to fix this from a previous thread. thanks so much.