The ebay sellers really are not at fault. They are purchasing stock from a company which deems it to of breached their policy.
The company at fault here is RM in my opinion for re-selling items to e general public.
OP – I have read the thread, but would encourage you chase them up depending on the time you last spoke to them.
In then event of RM dismissing the issue, I would make direct contact with some of the big names in the UK bike scene, however dont forget some of these big companies will get heavy discounts with RM and may not want to put their necks on the line with the product they sell.