I'm with D Davis. Been considering the gears and pulleys. I found a website for Zetecs, they seem to cater to the Foci, but I'm pretty sure they would work. I might be wrong though.
The prices didn't seen too out of the question. And they have free shipping.
Curious about the 65mm TB they have there. Think it would work?? Someone with more knowledge please check it out and let me/us know.
http://www.zetecenginedynamics.com/
