InMoov Faster Rotate/Twist for Bicep

Parts have been modified for faster rotation.

0 to 180 movement would take about 8.5 seconds.
With these parts it now takes about 5.5 seconds.

Now the speed of bicep rotate/twist roughly matches some of the other movements.

I'll try it with the shoulder pivot next. :-)

I'm not sure how much faster I can make it, as the position of rotgear and rotworm are fixed.