I have a pair of Kenetrek mountain extremes and they are super comfortable as far as blisters and hot spots go, but after a decent day of hiking the balls of my feet absolutely kill me. I've had the same issue with crispis in the past but threw in a pair of superfeet insoles and it resolved. I've tried 3 different insoles from superfeet(orange, green, hike support) in these kenetreks and can't find relief. Any advice or different insoles to try out that might help?