Hi Brendan,
I'm building the fork mount myself with a 50mm RA shaft and suitable bearings, I somehow just can't work with GEM's. Just a personal preference.
I've already got the NEWT program for dimensions, but my question was more on what the OTA design would be, a truss newt, serrier truss, cylindrical tube, not sure if there are many other types.
a few examples
http://stargazerslounge.com/1710199-post21.html
http://www4.informatik.tu-muenchen.d...ravelnewt.html