My intial hole in fuselage was drilled too large. Filled this hole with epoxy (put masking tape on outside of fuselage so epoxy will be flush with fuselage, used epoxy without flox first at bottom of hole, then put floxed epoxy in remainder of hole). This repair looked great, a little white paint and you will never know. Also repaired windshield rivet hole that I drilled too large when trying to fix problem where the factory put too much epoxy and filled the rivet channel