I don't know if this has been posted on this forum, but here is a good modification for the new Serpent gearboxes.

On the 2nd gear on the transmission, along the edge in front of the teeth, there are 3 slots that are cut in the gear so you can access the screws to adjust the 2-speed clutch. These 3 slots in the gear align (kind of) with 3 holes in the alum. gear "cage" that sits in the plastic gear.

Because of the shape of the 3 cutouts (they are angled) I found it difficult to access the screws for the 2-speed clutch. It is not so bad when you have to adjust the 2 screws on the shoes (they are at an angle in the shoes), but it proves difficult to adjust the small center screws to set the shoe gap (since you have to put a 1.5mm wrench straight through the gear, perpendicular to the gear).

I solved this problem by widening the 3 slots in the plastic 2nd gear. By default, the slots are roughly 3mm wide... I widened them an extra 2mm... just enough so the entire hole in the alu cage is visible through the slots when viewed straight on.

Glenn Cauley
Ottawa, Canada