Swap them, the R550's are junk! I had a pair that came on my C'dale R700 that gave me a lot of trouble. In 1700 miles I had to have them trued twice, retensioned once, and had a broke spoke. At that point I gave up on them and got a decent set of wheels.
In that price range you're best bet is probably a set of 32h Ultegra/Open Pros.