yes, 195psi in #1, 210psi in #2/#3, and 205psi in #4, so I'm good there IMO. Plugs look white to tan... Need to get a clean set of plugs, put 20 miles on them, and then to a proper plug chop reading....
No race gas.
I haven't removed the valves yet, but will check the seats for sure. Most of these miles were 7K to 10K RPM aggressive highway riding. Occasionally puttering around town. The engine does run smoothly, until it gets really hot, then you can tell a smoothness goes away.
When we dyno'd a few years ago, I thought they had the jetting nailed, it's running the BMC Race filter with the 1.7 factory pro jet kit. The mains are 148 inner, 145 outer. I was always taught the inner cylinders ran hotter so you could feed them more fuel. Thus the jetting stagger; this was also advised by Marc at Factory Pro. We stepped up larger and then smaller mains, and both times peak power at high rpm dropped. So the thought was we had the jetting dead on. We didn't have an EGA to do check the gasses which would have told us a lot about the staggering of the jets.
I had noted that the outer two cylinders EGT (measured with IR thermometer at the top of the header pipe) being lower than inner two. This tells me the head temperature is higher in those outer two cylinders. (EGT is inverse to head/combustion temp) I thought nothing of it at the time.
When I pulled the heads recently and saw the dramatic difference in coloration of the inner and outer exhaust valve stems, it made me really start thinking about the jetting of the bike all over again. The inner cylinder valves look normal, a slightly black coating... nothing like white or gray chalk.
Also here is a shot of the inside of the head pipes, same deal, outer two are white to gray. While inner two have a very thin coating of black soot.
Honestly, I'm thinking for some reason, this bike wants the stagger taken out of the jetting. Or maybe an inverse stagger, larger mains on the outside cylinders. Which would agree with you sidmarklong, that the jetting up top is lean.
I just have never seen valves this white before and going opposite the guidance of the guys at factory pro on the jetting seems even odder... but then again... every bike is unique in some way...