I sanded back the filter box and prepared the aft edge for more carbon fibre. I need some more overlap so there is no visible gap between the front and aft halves of the intake scoop in the closed position. Then James and I layed up one thin layer of carbon fibre under the box, gap filled with epoxy & Aerosil, then put another three layers of carbon over the top. When that sets, I'll trim most of it away again and bond/rivet on the front hinge portions.