I have a Sylvia and Sunbeam grinder. It would not grind fine enough even when pushed to the end of the dial. I read on coffeesnobs about adding shims and emailed Sunbeam about getting some. In the meantime I made shims from the hard plastic packaging from some wood screws. This worked well and the grind was fine enough for a good pour on about 12. When I received the shims I fitted them and it works very well on the same setting.
Try the shims and be amazed at the results.