8/12/23 - 1.0h 8/13/23 - 0.7h A couple of simple jigs really help this step move along. The first one is the 1 1/64” spacer block described in the plans that will be used to clock the aft torque tube assembly to the correct angle. The second one isn't specified in the plans, but it is very helpful to set the length of the torque tube assembly. I started with a small wood block clamped to the end of my flat surface, and then clamped a second block 17 3/4" away from the first. If the spacing between the blocks is correct, you can simply place the torque tube assembly between them and extend the assembly to the stop blocks. Definitely take an extra measurement directly from the torque tube assembly to ensure the length is right! Drilling the aft torque tube holes is identical to the process with the forward torque tube holes. I drilled the first hole with the torque tube extended to the stop blocks, the forward torque tube arm clamped flat to the workbench, and the aft torque tube arm clocked with the spacer block. The initial #30 holes are relatively easy to drill since the steel torque tube is pre-drilled. After drilling and clecoing the first hole, I removed the assembly from my flat surface so I could rotate it and drill the next hole. I found that clamping the assembly in a “V” tube holder at the corner of the work bench worked well to provide a stable drilling surface while allowing the protruding parts of the assembly to hang over the corner edges of the table. The final drilling step was to upsize the holes to #12. This took a bit more drilling effort to drill both the steel torque tube and the aluminum torque tube collar. With two opposite holes cleco'd, the two other opposite holes are open to drill. I drilled one side, then flipped the assembly to drill the other side. I inserted a temporary bolt in the two upsized holes to hold things in place, which allowed me to remove the clecos and drill the remaining two holes. I removed the bolts from the aft torque tube assembly after drilling, slide the aft torque tube assembly off the torque tube collar, and deburred the holes [#30 Drill, #12 Drill, Hole Deburring Tools, White Lithium Grease]