You can expend Ģ50 if you buy the original spares or you can make this:
All you need is:
From Blizzard, axle, pins, bearings and plastic outdrives
From X2, slipper plates and pads, spring and a spur
Use a dremmel to make the planes in both sides of the axle ( to make possible use slipper plates )
Use a 5mm bit to make the inner place of the spring
Assembly the unit. Itīs possible that a you need the aid of o tronger friend, compress the spring to put the last pin is nos easy
Prove it, works fine. Itīs easy to tune the original unit but this is a lot cheaper
