[Dukedesmo]

Thanks.

I started removing the valve covers, obviously there are 4 of them and you can probably guess how many I had to remove to find the missing spring?

Yes, thanks to Murphy/Sod, all 4 needed to come off. Turns out it's the vertical cylinder intake that's missing a spring.

No other apparent damage, the seal is still in place and, actually it's probably the easiest to get at as I can do it standing up over the bike but it was the worst to gain access to as I had to remove the tank, battery and battery box to get there.

I suppose it wouldn't do it any harm to leave it as is, no worse than the OEM seals? and that valve isn't sitting in a pool of oil like the horizontal exhaust does plus, I've no idea when it fell off but I'd rather it be right.

Here's hoping slipping a new spring over it is easy enough.