Hey DZ, you also have 2 plugs/mags a cylinder in ur prop so you dont foul a plug and lose the engine since you are usually taking off and landing with full rich (unless high elevation). I am sure when you've done your run ups before you ran into a semi fouled plug, then had to run up and lean the mixture, let run for a little till it cleaned up, then did your mag checks again. Now if only cars could have that leaning knob to coax a few more miles a gallon.
Now if only cars could have that leaning knob to coax a few more miles a gallon.