I just recieved a '81 evinrude 9.9hp outboard in a barter deal. the guy told me that the motor runs fine and that its only sat for about a year. everything seemed to be fine and clean but when i pulled on the recoil the prop turned and when i tried to shift to neutral the shifter would not move. i tried to shift and turn the prop at the same time and still stuck. i can see the rod move when you move the shifter but only about a 1/4 of an inch. i drained the lower end and found fresh clean oil so no water entry. any ideas about what may be wrong or is more info needed. thanks in advance. -matt