Today, following a session of sloppy epoxy-mixing work, I managed to install the motor mounts into the rocket airframes that needed them.
Here are the tubes lined up nice and 'purty' on the assembly-line bench:
In addition, the remaining random small BT-20 and BT-5 tubes received the seam fill and sanding treatment:
After cleaning up the epoxy drips and Carpenters Wood Filler sanding dust, I'm ready to continue forward with the next stage of the mass build.