Agreed the standard Spector gig bags are a poor choice for these basses.
I’ve seen the pics of the damaged white one, that’s not due to the bag in that case I’m my view. A correctly shaped Spector gig bag wouldn’t have helped.
Found the photos.
Not sure why the design change on the truss rod.
From memory, I think the truss rod end at the hell is a T section rather than a straight bar so it no longer slides in and out.