In the last two walks I have used the same type/brand shoes With insoles that were recommended. Both sets worked very well. Going back 5th April and have yet my third pair of boots same as before. But using old insoles all has been well till today when I did a twenty two kilometer walk and the ball of right foot is quite sore after about fifteen k's. Any recommendations for new insoles or any tricks to be shared. come on team spill all.