I've got an '06 LeMond Zurich (carbon/steel) with 3,500 miles on it. My problem is my rear wheel. From the factory, it needed major truing, so I paid to have it rebuilt by hand. (LBS said that wasn't covered under warranty.) Now the wheel has too much flex - I can easily move the rim about 1/2 cm each way by hand. The LBS tightened the spokes down for me, but that fixed it for about 500 miles, now the problem is appearing again.
I'm 6 feet tall, 180 pounds. The LBS says this isn't unusual for "high milage" wheels, but I don't consider 3,500 miles "high." Any suggestions?