Hello everyone, I'm in need of some advice. I've been riding for a month now and I'm really enjoying it. I ride a 1998 cannondale R1000. It seems to be in great condition, I bought it at an estate sale (slightly used ) along two others ( New) . I ride 18 miles a day, Is there any reason why I get a flat tire every third or fourth day. Also what would be good to take along as spares or an emergency kit