Parametric Servo Arms 3F 2F 1F

*** 12/29/2018: Now works again. Cleaned up text-encoding that was breaking the customizer. ***

This is a mod of the awesome Parametric Servo Arms post by hugokernel.
I have attempted to add support for 2F-size servo hubs (in my case for use with a Turnigy TG9e.)
Also added a Taper option so that long arms don't get too narrow.

[Update 13-May-2016: Have now also added support for 15-tooth 1F-size hubs.]

By the way, I'm really glad so many people have gotten use of this... But when you parameterize yourself a new one, please un-check the "Publish This" box.