Originally Posted by Julius

Make sure the gap between the soes and bell is small without the shoes touching. Ast the bell can wobble slghtly account for that.
Make sure both springs are equal in tightness. So once you found a good shift point, screw both adjustment screws in all the way and count the number of turns, they must be equal. If they are not take the average and screw both out this average number of turns. Then recheck the shift poit on track.

To be honest, the new xli 2speed is much more consistent in shift point. So if you are in need of replacing shoes or bell, consider getting the xli6 set in sted, you will not regret it. It is a direct replacement on both 748 and 747