I screwed pieces of plywood (covered in masking tape) against the sides of my forward beam mount mold plates in order to cover up the gaps, and to give me something to work against as a guide when fitting in foam fillers:
I had to cut one or two "darts" on the forward sides and then patch them, but otherwise the main C laminate was again done with one single piece of glass. I am again very happy with the laminate quality, things turned out just beautiful.
I also did a bunch of clean-up on the aft beam mounts: trimmed off the excess LFS flange material, cut\sanded off the jagged glass edges, and sanded off excess bog that squeezed through next to the mold plates. I also glued on the doubler plates to the aft mounts. Be careful, the doubler plates are also a slip-fit over the bushings, so before you fillet and glass one side, make sure the doubler on the other side is at least set into position first (or else you'll knock the first doubler out when you start hammering on the second side...). I'm getting close to being able to work on the cockpit furniture.