Okay so I am not the only one withbad clipless pedal & flat tire karma. The first time I rode clipless I made it through my ride fine only to crash at the top of my driveway. A week later the next time I got up the courage to try clipless again I completly turtled over at a very busy 4way stop. I was so embarassed because one of my customers witnessed it & asked me about the next day. Many other foibles going clipless . So I am still new to cycling and somehow have a gift for shearing off my valve stems when I pump up my tires. I did this last week so my husband showed me yet again how to change my tire. I then three days later pinch flatted close to home , so I decided I was going to go home and change it myself..I did it all by myself! And then proceeded to blow up the tube. I used all of the tubes I had. My husband said we needed to stop investing in mutual funds and start investing in bike tubes.