Thanks a lot guys.
Listening again after 24 hours or so, I can see it's a bit too 'thick' in the middle frequencies, so I'll have to apply the thinning shears
@Mario
You're quite right about the percussion. These days, when I'm expecting to do a lot of live multi-tracking I lay down a simple drum track first - it's far less 'clinical' that a metronome - and this is that track