Hi there Dave, No problem........sorting out ways to lighten these bikes is a challenge.........always a risk to shave things until they break...... I'm still waiting for the bike and parts to come up to me, and time is ticking, plus my normal workload is not getting any smaller so time will be against us if the owner takes too long. There is lots to do, and I am unfamiliar with these engines.........They are far higher spec than a normal racing Vincent engine, and able to handle much higher rev's up to 8500 no problem.......It will be interesting, but again i can't do much without the bike here. I have a race myself in early July on the Norvin single, next week i am hoping to put it on the dyno for some runs for the first time, just to play around with the timing and fueling to see where we are at.