You have heard it said, there's more than one way to skin a cat! I suppose you are right, I could have just kicked up the temp and gone with zone 4. I did replace my
zone 4 and zone 2 & 3 grills with expanded stainless steel. The top shelf originally is 10 inches and mine are 12.5. Guess it's six to one half a dozen to the other. Using zone 3 thinking out load, did perhaps give the underside a little more heat??? But it sure came out good, that's the important thing, right? Don't think my bride did anything with those dripping's I caught in the pan below either.