While planning a quiet day off the roads to stay clear of any straggling party goers, I look up my maintenance log and worked out I was due to look at the valve clearances (well, it was 5000kms overdue..) So I wheeled the bike into the garage and removed the required bodywork and did the valves. Only one inlet needed a shim change, as all the others were right in the middle of the required ranges
so it seems the bike may have settled down at 179,000kms.
While the bellypan was off, I gave the clutch a good bleed. The fluid was quite dark and a little bit of sludge needed cleaning out. The front brake fluid looked like new, so the clutch fluid obviously get a harder time of it with the heat. Rear brake fluid looked ok as well.
Bike is back together, so I may even give it a proper wash and polish