Just like the reduction wrap, the mask measurements for the interstage section are incorrect!
The first picture shows one of the masking lines molded into the corrugation of the wrap.
The 9/16" height of the upper horizontal strip should be 15/32" tall.
The height of the wide vertical stripes should be 3 9/16", not 3 13/16".
There is no way possible for these measurements to fit the Centuri vacuform wraps.
Even though it doesn't match the Estes instructions, you'll want to take advantage of the raised mask lines molded into the corrugated wraps.
If you were to go by the Estes measurements, you tape will have to go in and out of every corrugation. You'd never get a clean mask line that way.
Small pieces were added where I knew there could be adhesion problems with the longer masking strips.
Marking these with a Sharpie (before cutting to size) really helps with lining up all the connecting pieces.
After another burnishing on all tape edges, the interstage section is ready for the black paint.
This section was ridiculously difficult to mask!
Every time you think you are done, you find another spot that needs tape.
Time spent on build: 1:00
Total time on build so far: 52:45