I've been using one pair of Ed Viesturs inserts in all my shoes for a couple years now. They are the blue ones. Yesterday I went to the doctor for some foot pain and he suggested that maybe the inserts needed replaced. At first it shocked me because I love them so much and then I pulled them out and realized he may be right. They seemed more flimzy than when I bought them. I've put about 1,000 miles on them, just running and hiking. Whatcha think? Time for new ones?