Those are almost certainly the originals. Neither of my '06's moved a valve until they were up around 300 hours. The '03 I had a ridiculous amount of time on it, and never did move one while I owned it. Once they start, it's not a good sign, though always watch after a valve adjust to see if the clearances are stable or not. If the valve is seriously worn, they will tighten up in under 5 hours.