One outside wall has been cut a glued to the wall frame along with insulation cut and dry fit. I will work on the second outside wall and frame tomorrow and cut the insulation and mount the walls temporarily to the trailer to see how everything lines up. I also picked up some 4 x 8 birch for my inside walls. After I'm satisfied with the alignment of the walls I'll epoxy the outside walls and end grain of the walls, cut out the outside door skins then glue on the inside birch 4 x 8 plywood panels and mount to the trailer and put in my roof spars. I also found some 1/4 aluminum u-channel that I'm thinking of putting on the bottom edge of the outside wall, I think this will help the wall from absorbing moisture into the wall. I also ordered a 15 AMP power inlet plug, couple of inside reading lights that I'm going to convert to LED.