Sanwa 29E31S Chassis not attached to frame

[DJLC]

I've come into the possession of a Sanwa 29E31S that I plan to put in a Net City but the Chassis isn't attached to the frame of the monitor. I believe this was pulled from a Star Wars Podracer.

Has anyone else seen this before? I can't see where to attach the Chassis to the frame... Any suggestions?

 

[nem]

There's a separate tray. It's probably missing. You could just mount it on some plywood.

 

[DJLC]

The PCB for the chassis sits on a tray, which then sits on the frame. The PCB is screwed into the tray but the tray is definitely not attached to the frame at all. There are notches for the tray to slide into and its fairly snug but nothing I'd feel comfortable putting in a cabinet as is. I'm assuming this isn't a common issue and I'm gonna have get creative on it...

 

[nem]

There are notches for the tray to slide into and its fairly snug but nothing I'd feel comfortable putting in a cabinet as is.

There's supposed to be screws as well. You slide it in and then screw it into place. I want to say at least two screws go in from the top?