Finished prepping bottom skins and assembled to the three fuselage frames upside down on the saw horses. Mark showed up again with the boys for more tubing and he helped me with prepping and clecoing the lower skins to the assembly. Everything fit together nicely. Next session I willl double check everything and then rivet this much together. Then the assembly gets rolled upright and work proceeds. An interesting thought - since this is not an aerobatic airplane, the fuselage will never be upside down again!