HP 32E requires case pressure to fully light up

[dmh]

I have a 32E that requires pressure applied to the front of the calculator for the screen to be able to light all segments.

There is some damage along the bottom edge between the to 2 halves where someone has previously forced open and probably caused enough damage that when the case is screwed closed it doesn't hold firmly. There is still a lip on the front half but it just doesn't appear to lock together securely.

I've opened the calculator up and cannot see anything obvious I can do to better secure the 2 case halves.

Any suggestions?

TIA, dmh