You can make a dood gloss with a glossy FB paper and a plexiglas sheet without surface defects. Put the prints in the water for 24 hours. Before applying them to the plexiglas, put them into 95-100C water for 1-2 minutes. The plexiglas must be washed with soap just before the procedure and be still wet. Press very firmly and make even (also firmly) with an iron through a newspaper or, better, flimsy. Wrap in some cloth and put vertically in some quiet place to dry. When the print has dried it must not come off but will stay on the glass due to static electricity. Take it off the glass with a distinctive sound of micro electrical disharges. You will have a glossy even print.