Ok, Did a bit of playing around with some parts to get a good shock cartridge without needing hard to make custom parts. You just need to drill out the cartridge cover a bit. Now it doesn't build up rebound anymore and the shaft support is much more accurate.
Note 1: Yes you need to use the smaller yokomo shim (6,4mm) twice, your not using the larger ring (7mm)
Note 2: The AE o-ring will fit, but of course I'm using the Janus "801" O-rings
