I'll begin racing my Academy TC soon seriously (yesterday was called off because of a break-in to the venue
), and the spares issue will be interesting.
Ages ago, I contacted Academy in Germany, and they said they could supply me directly, while the other option is ModelRec.com, the USA distributer - rovided their delivery isn't crazy, it's a good (albeit maybe slow) option as most spares cost less than the VAT threshoold of £18 (so they don't get stopped by customs).