Dr. Zooch Saturn V Build Step 4 Adapter Wrap

The instructions have you form and glue the adapter together and glue S-IVB tube before test fitting the wrap.

The S-II / S-IVB adapter wrap was cut out and a test fit was done before gluing anything together.

The wide end of the wrap didn't meet up, the small end fit seemed to be fine.

A block with 220 grit was used to take the wide end down a bit.
You can see the balsa starting to show through the white paint on the wide end.

Earlier, the adapter didn't get the grain filled or hit with primer. But, the white paint may have swelled the balsa some.
Not a big deal, the block kept the side angle straight.

After gluing on the wrap, the fit is okay, still a hair wide at the bottom end.

Note the S-IVB tube isn't glued on yet. It was slid on to test the fit of the wrap.

And, the other side of the wrap.

The fit should be good, but any problem areas will be covered up by wraps D and E shown in step 5.
Earlier I masked off the tubes where all the remaining wraps would be glued on.
The masked areas are slightly narrower than the wraps. When the wraps are applied they'll cover up the open areas.