"Is it normal to break spokes so much? This is the second one on this wheel."
Not really but often happens.
"Should the LBS fix it since they trued it only one month ago?"
I don't think so, I doubt that the LBS caused the hop.
"I've heard of "retensioning" a wheel. Does that mean basically loosening and retightening every spoke? The LBS said that's the only way to get the "hop" out of this wheel."
Yes, and it may mean removing the spokes and reshaping the rim if the rim is bent or bowed.
"Is the "hop" in this wheel causing the spokes to break?"
Probably, unless the hop is in the tire instead of the rim. An out-of-round rim usually means uneven spoke tension, and it's the loose spokes that will break.
Al
Last edited by Al1943; 10-02-06 at 07:56 AM.