I raced vintage at Castle Hill with Jason Millward (Bormac) and Ozipanda etc last July (2013), maybe we met? Also went to St. Ives a couple of times - loved the place - that's where my avatar pic was taken by Jason.
I was the British guy with the RC10 and Turbo Optima Mid Special
Great fun but the jumps were brutal! Thankfully we bypassed them in the vintage class.