Continued to complete the filing on one end of the diagonal tube. It took quite a while to trim the metal but finally it fit nicely. Next, a 1/2 x 0.035 tubing is cut for the floor, somehow due to loss of concentration it was cut too short after all the hard work being done. This could be due to no marking made at both the fuselage side longeron and the diagonal tube. Another tube was cut but still half way through for a good fitting.