I go down to the bike shop to change the tires and put in tubes. I had a flat and couldn't fix if the slime. So I went down to the bike shop and had them give me a new tire and a tube and mount it for me. I get home ride my bike for bout 20mins and I look down and my new back tire is flat. So tommrow I have to go spend 10 bucks on a new tube and 20 bucks to put it in my tire. Darn the luck.