First, you're using an old version of OpenVSP with an old version of VSPAERO. You should upgrade.
The problem with the fuselage is something to do with the final cross section. It may be the skinning settings, or perhaps something else. I added an additional final XSec, set it to a point, and changed skinning to achieve what you're after here. I also ran the fuselage as a thick body -- since that is likely what you want.
So, update to the new version, work on the aft cross section, you should make some progress.
Rob