It would appear that there isn't/is an offset to the fence. If you're using a trim bit bit the outfeed side (left) needs to be even with the beraing and teh right side offset the amount you're trimming. If you're using a cutter like a round over bit then the fence parts should be even to the bearing. Use a ruler to make sure both fence sections are even with the bearing and close the gap to minimize the distance between them for added support. On larger bits I took MDF and made custom fences allowing the profile to cut into the fence and giving me support across the entire fence or at least a large portion of it which helps on smaller parts. Hope this makes sense,