You may recall an earlier thread about me taking my bike back to the LBS where I had bought the bike and learning that the rear wheel was out of true. Looks like I need a new wheel... They kept the bike for a week, and gave it a complete tune-up and I took it back when they were finished.
You may further recall that I had problems immediately with the trued wheel.
I decided to take the bike to another LBS for a second opinion on what was happening before taking it back to the original LBS (which is where I had purchased the bike).
There, I learned that a wheel can be out of true and / or out of round. The first guy who looked at my wheel thought perhaps it had a "hop" in it, meaning it was out of round. He called over their wheel builder, and he examined the spokes, and told me the guy at the original bike store had done a few things that caused him to wonder. (I can't remember what those things were, but they had something to do with tightening the spokes, lubricant or sealer, etc.)
In any event, the guy thought he could fix the problem. (For one thing, the spokes were loose again.) He told me that it might even be covered by warranty from Specialized, and that they'd had a "batch" of bad spokes that model year.
He ended up replacing one spoke with something he had in his tool box, and was going to contact Specialized for a new set. They'll call me when they come in and replace everything with new spokes.
The bike rides fine now, even with one silver spoke among the black.
Oh -- and the charge for his services? Nothing. Free.
Another kudo for the fine folks at Adams Avenue Cycling.