The Ryft build is awesome. The only thing is, it isn't much good just bashing around. But it isn't made for that I know. We just took it outside for a spin and she won't stay on her feet with the slightest of turns. I think it needs hub extenders, or a little droop.
The only things I can say is whatch the shifter fork orientation. Most assembly manuals will point out when there is a part that needs to be installed a certain direction, but the Ryft manual says nothing about that on the shift fork. And I missed the little counterbore that the shift arm screws into. The tranny will not shift right if you put it in backwards.