Installed new shifter SL-S7000
The small parts kit arrived (SM-S7000-8) and includes cassette joint CJ-S7000. The cassette joint had to be heavily modified to fit with the chainless cog. I had to almost completely remove the outer ring and grind down the underside so it would lock into place and fit the lock ring. Mostly used a rotary tool to grind the plastic down. Used a file to cleanup and even things out a bit.
I also had to modify the chainless drive shaft housing to fit the cassette joint. That was easy with the grinder/metal cutting blade. The cable still rubs a bit on the metal, but it is getting close to the cogs, so I'm not sure if I want to cut into it any further. Might just keep an eye on the cable for now and grease it up when needed.
Went for a decent test ride. Shifting down is smooth. Shifting up sticks a bit. If I peddle backwards after shifting up that helps move it into place. No slip, so I think the original issue is fixed. Shifting up may have been caused by the long cable end rubbing the housing cover since shifting while parked with the cover off works fine. I cut the cable, but need to get some cable ends.
The wheel needs to be trued up and I need to think of a better solution for the cable (and add a cable end). But for now it is ride-able and better than it was. It's funny I've been cursing the chainless for a while now and I think the main issue might have been the Alfine hub.
More work than expected as usual. It really is a nice ride when everything is working.
New hub: SG-S7001-8