How does my engine sound?

[unfazed]

Can only assume it is. Obviously chains are better looser than tighter. But there's a ticking noise that doesn't seem to be related to anything... Very odd, probably just being over cautious

Could even be a rattly exup valve.

Get someone to put their hand (leather gloved) lightly over the end of the exhaust pipe and pull in the clutch, this will quiten it enough to  allow you hear other sounds better.