Shift knobs for the 1st and 2nd gen Wevo shifter has now been added to the PP catalog. The part numbers were not exactly supposed to go live right now, as I have a limited supply of the bushings, but it is.
I have 8-9 silver (Al) bushings and 1-2 black bushings at the moment. It will be a few weeks at best before I can have more black anodized bushings available. I apologize for this.