In the process of building a K.One. I'm having trouble figuring out what compression plug I need. The frame was supplied with a Colnago C64 fork expander, but the K.One ships with an aluminum sleeve epoxied inside of the steerer. The C64 is minimum 22mm, and with the shim the inner diameter of my fork is 21mm. I know bikes in the past that have had the aluminum shim have used the old star nut plugs, but from other photos online it seems Colnago might have a narrower compression plug? I've attached some images showing my fork, as well as a frameset for sale with a similar looking expander. I also reached out to Colnago for the installation manual, but it is very basic (attached as well). Thanks all!