I have bought an old 4130 GT off eBay. Spent £££££'s buying all bits for it. Now the day of putting it together, and found that I am missing a Crown Race washer... the guy I bought it off didn't send it to me.

I have been told that I can't just use any crown washer as it may not work.

Does anyone out there know where I can get the right one or an alternative that will work?