I have Compomotive HB17's and you will be very lucky if you get an acceptable resolution through Compomotive...either in the USA or in the UK.
I have been having my own drama with them recently and was informed that Comp USA was supposedly working with a company called Kodiak (
http://www.kodiakmotorsports.com) for some of the components of these wheels. I would check with them.
Also, I may be forced to look into new wheels for my car and was talking with the guys at "Team 3 Wheels" (
http://www.team3wheels.com) and I am almost certain that they told me that they had actually made a bunch of spinners for unhappy Compomotive customers.
If you find any good sources for Compomotive components for their HB wheels....PLEASE post it here and send me a PM.
Thanks !
Pig