Canyou give us a peak to see what you are doing it sounds verry intresting.
Here's a try!
I have run into a building block, so I'm sharing pics and seeing advice.
I REALLY wish designers would include directions, like DHWALE always provides. I grew up building plastic models, not connecting puzzles, and its a different mindset required. I prefer planning how to fit and hold, not how can it fit!
Here's my block.
The Nova class doesn't really have a primary hull/secondary hull fit, as there is not hull separation; temporary or emergency slips. Its all one hull. Sorry the fore "arrow-head" part, often called a primary hull in Trek, is a upper hull, while the aft/engine section is a lower hull.
Not that we have our terms to communicate, I ask for your help.
The joining of these hulls is problematic.
Please look at the first image for the separate hulls, with glue tabs (yes, I know there's a strong bias against using glue tabs, but this is a test/rough build; where I am trying to figure out how the author intended the model to build-up). It this first pic, you may note that the main sensor is a flat panel that glues to the top of the slightly curved navigational deflector (the blue thing). On either side of the dining of these pieces is a bit of overlap on either side; both having there own glue-tab. The lower hull has a curve outer hull that surrounds the navigational deflector (the blue and gold thing).
These pieces are supposed to win and enclose the navigational deflector; joining the lower hull to the upper hull.
There-in lies the problem.