I just did my valve check last weekend and they were all in spec. I have 30K miles on it right now. Is there an indication (riding experience or a sound) that might notify us an incorrect spec about the values? Its an expensive (timewise) check to do the measurements only to find that everything is perfect (which happens most of the time).
I also upgraded my plugs to NGK iridium (no adjustments) and love the ride. The K whine at 5K rpm is also less. The engine is a lot more smoother.
For the 36K server, change the fluids (engine, trasmission, final drive), upgrade the plugs, valve check, filters (air, oil, fuel). You may even do these yourself. First time it takes 2-4 days. Second time the entire service might take close to a day.