New to SUAVE, issues with cruise distance/weight

[Austin Bergeron]

Hello

Sorry in advance, I am still very new to SUAVE, only been working with it for a day. I started from the Concorde tutorial, and have changed the geometry a little to fit our Capstone project. When I am defining the cruise segment of the flight profile, if I hit a certain threshold, the weight plummets to massive negative values, and the iteration does not converge. The fuel shouldn't be running out this early, and so I think there is an error in my code somewhere. I attached the images of the weight for when I hit a distance value too large. I can add more code if it is needed, I would really appreciate any help.

Thanks!!