Mentioned earlier, the top left strut of the "X" aren't in the holes. The plastic was a bit warped.
It's easier to take care of this after the tower was glued up.
Push in the pin, brush on the glue and hold until dry.
Set the top into the escape rocket bottom and check the alignment.
Here's a dry fit.
This is an impressive assembly, almost worth the 47 years it took for me to get the kit!