Update:
I now have a few pre-production WEVO bushings in hand. Three are out for black anodizing (one already spoken for), the rest are the Al silver. They fit both the 1st gen WEVO shifters and the 2nd gen. These bushings do not have set screws.
For the 924/944/968 guys that may see this, I also have a handful of pre-production bushings done for you as well. I haven't figured out a shift boot solution yet, so the early buyers may have to figure that out on their own, but I am working on some ideas....