At the "Bike the Bay" event in San Diego, I asked the Bicycle Warehouse mechanic to take a look at my rear derailleur. It was skipping in low gears which would have made it impossible to successfully finish this ride. They identified a problem that another store with bad "Performance" couldn't find. They fixed it and I had one of the best rides I've had in a long time. Thanks to Bicycle Warehouse and the mechanics that sponsored this ride. Think I found a new place for my biking needs. Much appreciation.