Enrichening the carb mixture also means your enrich your oil mixture. Too much oil in the mixture is not good, both for the environment and your engine, especially the spark plug which will tend to foul. If you burn pre-mixed gasoline and 2 stroke oil, lower your oil input in the mixture. I own many 2 stoke engined gardening machines. For all of them, manufacturers recommend a 32:1 fuel to oil mixture. Once the engines broken in, I lowered those ratios to 50:1, which is enough oil. My Lawn boy mower, which I bought second hand (15 years old) ran another 20 years ( total 35) before dying. And it was not the engine internals that wore out but a crankshaft seal that finally gave way. So, dont worry about lowering your oil ratio, the fact that you raised the fuel intake in the cylinder will cool off your engine enough so less oil is required. If you are scared, go gradually. But once at 50:1, you will notice a better running engine ( less useless blue smoke, less stuttering at low rpms or when cold) and dryer exhaust tip. Hope this helps!
