hi,

sorry for late answer. yes, CO2 is for cylinder2 so useless here.

your CO1 value may be the factory setting, so... if you have a filtre (KN, DNA....), an exhaust. or maybe the two.. you may increase it a little (see tutorial befor modifying). The mixture can often cause overheating, but not that much so i dont think the problem is here...

glowing pipes can happen :/ i will do somes research on that...

is your spark plug ok? (CR7E? CR7EIX?)

clean air filter?

last valves check?