well if the rims are bent then the LBS guy could be correct, however I doubt it is the case since your bike is so new. unless you have had a serious wreck since you have had it. how exactly are you breaking the spoke? is it under normal street riding or are you doing trails (is the trek 1000 a mtb?)
It also is a good idea to go to or call another LBS and see what they think the problem might be.
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-VegasCyclist
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