My spoke retainer on my drive wheel popped out. I went to my local bike shop and was told parts for Mavic wheels are not available and they had no time line when they could get the part. I called John because I saw that he was selling the part even though it said sold out. After I told John my dilemma he told me to hold on and he actually found a used part. That go me up and riding again. I was thankful for the extra effort he spent on helping me