Thanks for all the help Baskt case.
Yes, the plug is darker now. Curt took the plug out several times to check it.
I'll take the valve cover off this morning and check the valves.
I haven't been getting much riding in because of the dying once it warms up, but it still only has maybe 180 miles on it ( odometer is in kilometers so I'd have to look up a conversion chart to be exact).
So engine isn't fully broken in yet and it stands to reason that the valves still need occasional loosening up.
Bike seemed like it was running way too lean all this time, and seems better now.
The valley Curt lives in is 3400 feet in elevation, I live at 6000 feet.
Days are still warm here but it will be too cold here to ride by Thanksgiving, so I'll be loading the bike up and taking it down to the low desert this winter.
Lots of great riding everywhere in Arizona:
