Chainsaw Repair

So here's my scenario: 

1.  You start with the saw tuned so it is firing evenly at some rpm under load

2.  Then you lift a bit, and the rpm goes up

3.  The air velocity through the carb goes up proportionately to the rpm increase

4.  The mixture gets much richer, passing the 11:1 AFR, and flame speed gets much lower

5.  The time available to complete the combustion burn goes down due to the higher rpm

6.  It misfires

7.  Because of the misfire, there isn't any exhaust gas in the next filling, and flame speed goes up again.

8.  It fires