I have used David Page here in Seattle. I had a pair of Danners that the knobs had torn off the bottom of the tread. I talked to Danner and they said they are glue on soles and not intended to be repaired - sorry. I took them to Dave and he said hold on a sec… went up to his stock room, came back with a pair of Vibram soles, matched them upo and said, "Give me a few days." I picked them up a week later and paid something like 35$. They are STILL holding tight (although the goretex has gone). This was 2004. David does great work and is highly regarded by climbers etc.