i recently got a yakima raptor off of craigslist to use with my full suspension bike. i installed it and loaded up the bike for the first time today - i had to pull over after three blocks b/c it sounds like all heck had broken loose up there. after tightening everything down, i decided the noise was from the play in the raptor arms where they attach to the rack. i'm undecided if i want to take my chances on the highway. i know some swaying is normal for these types of racks but how much is too much? is this a normal occurrence with the raptor? should i just turn up the radio and stop worrying?