@ScottSemple and @ScottJohnston,
Thank you both! My weekly Z3 total was between 45 – 90 minutes per week, however I had a few weeks with upwards of 2 hours in Z3 on long training runs (which after the fact I learned from the UA forums that spending that much time in Z3 is inadvisable even while racing).
I’ll keep at the Zone 2 running and update this post in a few months with my results! Thanks again!
JDB