Yes! I was doing more research and you are correct it is the hole in the OEM upper control arm mount. UMI performance sells these step washers. The hole in the mount is 16mm and the step washer makes the hole 14mm.Thanks for the heads up Monkeyporn!
Step washer on the bushing that connects to the mount? Also, where would the step washer be installed, both sides of the bushing? Lets me know if anyone figures this out, have a great day my fellow S197 owners