Oh as far as spacing the vari I have the best best best solution.
Add a series of plastic or fiber washers between the ramp plate and the vari, floating on the boss.
NOT PINCHED BETWEEN THE RAMP PLATE AND THE BOSS in the threaded area..
The floating washers stop the vari from opening too far, and you can custom space for whatever belt you want to use.
As well, the angle change on these allow a faster shift but controllable with weight adjustment and spring tension. I'm using very little spring tension (edited)