I got an email from Gary S. asking for a measurement in the F-104 Starfighter instructions. On the first run of the kit instructions were missing a measurement.
In Step 20, the back end of the intake nose cone half is glued 5 5/16" from the back end of the main air frame tube. Step 20 is shown above.
I've sold quite a few of these kits and haven't heard from anybody about the omission. Sorry for any confusion! If your build is a little off, it shouldn't matter. I've seen F-104s fly at club launches with no stability problems.