I just put a new Minion DHF 2.5 on my mavic ex 823 and have, i think, a problem. The tire seems too have little hop in it. I even took it off and reinstalled it. It is perfectly sealed; no leaks. Back in my rigid BMX days, this would have been unacceptable. Is this common and/or a defect? Should I care about this on an 8+ inch travel downhill machine?