Not sure if this is an X-Con or an X-Convict. Either way, I got it in with a bunch of modder fodder I got in a trade a long time ago. Hub completely missing on both sides, so not exactly sure what happened there
Anyway, I bored it out and machined in a piece of 1/2" delrin. I then bored the delrin out and machined in a 3/8" piece of aluminum. Cut the bearing seat, .555 pad recessed it and cut hubstacks. Voila! Smooth as butter on the string, with a slight stack vibe.
The tops of the stacks sit just below the level of the rims.