Anyone with modding experience please help!

[ferono]

Start a private server, load one instance of Freelancer and connect with an account that has the ship to your server. Go to space

Change active account, start second instance, undock in same location. Try moving your camera around and see if parts of the ship disappear when it reaches the end of the screen.

Generally, this is a problem with your sur (hitbox), if it doesn't generally match the volume of the ship. Visibility of a ship in Freelancer is calculated based on the sur.