I just finished a waterpump replacement and now trying to re-attach gearcase on motor. When the shift rod gets to the top of the tower, it jams and won't go into hole at bottom of powerhead. It seems to jam and won't make the final turn to match up with the hole. Any suggestions or techniques to get past this issue. I've tried turn it from the bottom with pliers, back and forth, but it won't budge forward enough for the hole to capture it. Very frustrating!