Originally Posted by teamaerox

in particular i dont understand that point:

Note: The 7004 hub is the correct part but the diameter is actually just a little big. The solution is to sand off some material from the collar halves to enlarge the opening---CAREFULLY-- so that they fit around the adapter. I used the sandpaper sheet wrapped around a coke can trick to trim it back.

what do i have to sand off? Does anyone have a pic?

Originally Posted by LPMM

This is the part you need to sand off, the opening is a bit too small for the Momo hub. Take a food or soda can, wrap sandpaper around it and sand the trim to enlarge the opening.