Piston is fine, couldn't see any marks where it had hit the valves but all 4 are bent. The piston is actually quite clean, still see the metal, only the centre is black but seems to be decocking itself in the garage as the coke is getting soft and peeling off in the damp air

I received a cylinder head off ebay which they thought was the front but it turned out to be the rear, but they are exchanging it. I'm also getting Ratty's engine, so in a bit of a dilemma whether to stick the newer engine in or continue to run the old one as far as I can then swap them over. Despite the lack of maintenance/oil changes there is bugger all in the way of wear visible in the top end so hats off to Mr Honda, if only they could design a CCT with the same efficiency eh?
cheers