From what I've seen on the Centa pictures, the inner drive is very close, but not touching the outer driven housing.
So for it to "skip", you would need to have all four rubber rods totally chewed up. Then after that, you would be skipping almost all the time, or at least under very little power.
As far as the rear belts "skipping", there are guys with Harley full touring bikes two up doing wheelies. Lots of guys lift the front tire some once in awhile. The newer HD's, since '07, have been using just a 25mm wide belt and with the same pitch as the M3W, 14mm. The sprockets are from 30t to 32t drive and 66t to 68t driven. I've heard of guys breaking a belt, literally ripping it in half, but never seen or heard of guys jumping the teeth on the sprockets.
With the Gates Polychain, or similar belt tooth profile, they are very similar in performance as a chain, hence the Poly"chain" name.
I'm no expert, but there must be something else going on to cause the skipping sensation you're feeling.
I'd like to be proven wrong though.
Good luck with finding your skipping issue.
