I've noticed something about the new Power Cushion+. It seems to have a lot more deformation than Power Cushion or Triple Power Cushion. Grab the shoe and press on the clear plastic on the under side, and you'll see the yellow cushion compress. It could be that the heel is compressing, and that's stretching the underside of your foot. I've been using the Comfort Z and SHB 03 LCW. I have custom made insoles. I don't notice it so much anymore, but when I first used the Comfort Z I did notice the heel compressing on heel-first, deep lunges. It's just a theory.
Pretty sure it's something to do with the heel cup. Just seems to sit a bit too high and digs into my side of my ankle causing pain in that area. Going to swap to my old shoes to confirm it's not the 65ZM. Just as I was starting to enjoy the new grip of these shoes.. =( Sent from my MI 8 using Tapatalk