Mindcrime... I opened up my 2 speed tranny.. as I wanted to see how it works...

on the clutch. well its not really a clutch.. but a catch.. the locks on the screw when it gets the right amount of centrifugal forces.
one thing is the consistency of the spring... and the problem is the tup of the catch connected to the spring.. it kinda slips in between the spring

what i did was to add a flat head on the tip of the spring that makes the spring head flat. as the catch pushes the spring it does not get stuck.. making it a little more consistent..

you should have continued the clutch type design as stated on the manual.. it will be much much better...