The mass air flow is a good thought, but it has to be plugged in for the engine to run. Clean it with Carb clean and see how it runs, I doubt it will make much difference, as there is air in the fuel. But a clean mass air flow sensor will help in the running so it will not hurt to clean it.
NRTP selection Committee member
Cle Elum Ranger Dist. ORV Ranger
Build your rig to fit the trails, don't change the trails to fit your rig!