I haven't checked the plugs, however, that was a thought because of the symptoms during the ride.
I know they were way rich after the D&D exhaust install and rejet, since I was jetted for sea level, and I did a 6 day trip to Wendover, Utah for the Bonneville finals at the salt flats at an average altitude of 6,000 ft.
After I removed the vent tube from the tank, it all went well, except for a bit of sluggishness at cruise speeds.
07 Bonne Black with ARK, AI removed, K&N Pods, Nology Coil and wires, D&D full exhaust, 135 mains/42 pilots, 1 shim @ sea level. Biltwell trackers, Hagon 2810's & progressive fork springs. all blacked out.