another flat...

and a missed class due to sitting at express tire for two hours this morning waiting for them to change another valve stem... then trying to convince me that I needed to replace a tire, that unbeknownst to them they had replaced about a month and a half ago... Ironic that the dude trying to rip me off was from Palmdale California... and missing a few teeth... I was amazed he was able to pull a similar stunt on the two people in front of me and get away with it...