Dave(s) - thanks for the replies. I finally got a response from Whirlwind (think I hit them while they were all at OSH maybe). Here's what they said.
"Did you have a vibration after you set the blade angles? Blade track is something you look at only if you are having an issue with a vibration. Our tolerance on blade track is up to 1/4". Priority one is to set your propeller blade angles all the same, and achieve your target static RPM. Don't make adjustments base on blade track unless you are having some sort of problem."

I am still a bit out of that 1/4" tolerance (by 1/16") but my blades are set to where my static RPM is 5330. I took my time setting them and they have a 0.1 degree total spread between them so think I am good there. I put a DynaVibe on the prop and balanced to .08 at 3500rpm, .03 at 4000, .02 at 4500 and .03 at 5000. The comment about the blades flexing I think is right on so with those vibration numbers, I think I am OK.

Again - appreciate the responses.

Gary