I'd be up for this Sam, maybe with a buddy on a 400 if that's OK?
If you get stuck for numbers I'll post it up on Greybike, OK they're not strokers but they're not rocket down the straight-wobble round the corner merchants either.
And £89 for Cadwell is cheap cheap cheap.
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Please do not PM me technical questions, if you can't find it on the Forum start a thread