I use my router table often. One day, I decided to make a modification to the fence to make it easier to make fine adjustments. As you can see here, my modification is a plywood cleat clamped to the table behind the fence. A pair of threaded rods and wing nuts are installed through the bracket and attach to blocks glued onto the router fence. Now, when I need to make an adjustment, I can use the pair of wing nuts to micro-adjust the fence, then tighten them both down to lock it in place.