For starters, I procured Mrs. BlastFromThePast's hair drier to attempt a fix for the body tube warping mentioned a few posts back.
Placing expended engine casings in all of the effected tubing for support, the assembly was hit with hot air to soften the glue.
It worked.
Now the model is the correct shape. An engine fits nicely in the center tube, and the gliders fit much better between the fins.
The last items to attach now are the two half-inch sections of launch lug inside the glider support tubes.
These function to center the gliders and provided extra support to the edge of the tubes.
Construction is now complete on the booster rocket.