Since the recent patch, I've now been able to finally complete the hellcat's engine, however.....

I'm having issues in the following areas:
- Sometimes when I enter they yard, none of the tanks I have out there are present
- Intermittent inability to select doors - when this happens the only way I can go to different areas is with the 'go to' buttons in the Tank Manager screen
- Cannot open doors and hatches on tanks
- I can remove parts from tanks, but they don't highlight, so I'm not actually sure which part I'm pulling off

I suspect most of the above issues are in some way due to a common highlighting/selection issue.