Just got a new frame with a DHX on it, when I first got it built the THX was silent, after 15mins. of driveway bouncing the shock has become pretty noisey, it's making a aiw swooshing noise as the shock rebounds, on the way down the shock is quiet. I have not messed with any settings yet, other bikes I have rode that have the DHX have been pretty quiet. Does it just need to be set up correctly or is there something wrong? Thanks.