This only happens when you install 3.55 gears in a 742 case with a Borg Warner cone sure-grip. The pinion head is just thick enough and the outside diameter of the sure-grip is just large enough to collide.
Thanks Cass for clarifying that. Likely a one in a while deal but may be something that should asked on order. Love the gears and outcome though! The fish is very enjoyable since.
