I had the same problem. I did the adjustments as suggested in the link provided. I removed freeplay in the gear box and adjusted the toe in and the difference was incredible. After a while, some of the freeplay came back. I've been told I likely have worn components in the gear box. But if you do as suggested in the manual, it should make a world of difference. It's a good idea to get under there while someone moves the wheel back and forth so you can see if anything is loose.
