4 Speed 2nd Gear Question ?

hi another thought , is the side cover might not let the gear go in all the way.
they have a detent for the ball to ride in. also the comb might be hitting on the ball passage. I have had side covers I had to modify to get all way into gear. might be a syncro problem ,usually they grind. an old trick is to lay back the groove where the ball rides when in gear for to get it to go back in farther.just food forthought.