Surprising update: I DID wear my newly-configured shoes for a 10K running race yesterday and... no knee pain! This is the first time in YEARS I have had zero knee pain at this distance. Who would have thought 2-3mm could make such a difference?

Next step: configure my bike shoes similarly and see if I notice a difference on the bike. I never feel like I'm striking the pedals with the entire ball of my foot... hmmm....

OakLeaf, I never thought of putting an insert into V5Fs. Seems counter-intuitive, but I'm tempted. I was passed by a speedy barefooter yesterday and was intrigued. Again.