Found this whilst on the search for the hubs:
54260 DN01 slipper set, maybe the spring is from this kit?
http://www.stellamodels.com.hk/54260...ch-p-5312.html
Maybe Lee can confirm??
Also found the vented slipper hubs: 84297
http://www.stellamodels.com.hk/84297...te-p-6375.html