Huge Displacement in 1D Static Analysis

Hello,

I've been trying to do a 1D analysis of our FSAE chassis in Hypermesh and keep getting unreasonably large values for displacement. I did a modal analysis to check for connectivity and there was no issues with that. 

The .out file shows warning #5628 and #312. All of the other forum posts suggest the modal analysis here, which the chassis passed.

I did get reasonable displacement files when I applied the force in just the y direction, but I can't get it for multi component forces.

Anything I'm missing or doing wrong?

The model file is attached.