Finished rebuild after a 12 thou barrel skim to tighten the squish one last bit.
Probably should have done a proper shakedown ride first before embarking on a 150 mile motorway trip home. Oh well, it was all fine.
Oddly, tightening the squish and slightly increasing the compression seems to make it run richer. I would have thought that slightly increased volumetric efficiency due to increased CR would have made it a little leaner. I suppose it's because the tighter squish makes the fuel burn more efficiently, then as a result more fuel is burnt efficiently!
Will have to tweak the map down (again!).