I have downloaded Bruce Fitzgerald's Atlantis shuttle (Atlantis-1.zip), along with a couple of approach flights, but I can't get the tanks etc to drop when I use shiftE2 or 3. I have seen that some others had this problem, but have not seen an answer. Can anyone help out please?
I think this is the new version.
Try it and see if it's better.
https://flyawaysimulation.com/downloads/files/3048/fsx-sp2-space-shuttle-atlantis/
Let us know how you do.