I'm running a KMC710SL chain on a Wabi Classic. It has maybe 500 miles on it and clean with no apparent tight links. Like I said it had a bit of a tight spot when new but now it more pronounced. When I spin the crank without the chain I don't see any wobbling at all. Same for the rear sprocket. I'll try the original chain to see if it does it also. Thanks for the help. Like one post said, I'll adjust to the tight spot and keep on truckkin'.