Goin across the lake the other day and the prop kept �slipping� what I mean by that is the motor would rev but not push. Got back to ramp. Went to take the motor off transom and the motor came, but transom mount stayed. had to pick up all the little �freeze plug looking things� got it back home to find a plastic piece got broke. I�m assuming where the shift rods meet and get coupled?? Anyway I�m lost at what parts I need to order. I�m good with motors but when it comes to lower units I have no clue