There does sleep to be some clearance on mine. If there's supposed to be absolutely no clearance, or ability to rock them side to side then maybe mine are worn past their life. I tried to adjust the screws down tighter however none of the clearance was taken up and I was at the point of stripping out the little slot head set screw.I will look at mine and get back to you on the clearance, I wrote a PM to Rich King and asked him for input.
I pulled out the feeler gauges and it looks like I can tighten them down to where I can't fit the .0016 feeler gauge. So i'm guessing my clearances are ok. The machine looks to be in great shape, and my first thought was not that I have a problem with the machine. Possibly the blade/cutter setup...I can get a .0025 feeler under one side of the slide, and there is no discernable side play, this scraper has not seen a whole lot of use, so the info is pretty much baseline.