Excellent work! It's really looking great, and your idea of the 'upside-down' screen may have just solved a small problem I'm having with my own rig.
Only one thing I noted - You need to check your bolts and locknuts for correct 'safety'. This one shows a nyloc nut that is not 'safe'. They need 1-3 threads minimum showing clear of the nut to fully engage the nylock insert and ensure that the usually rounded/tapered end-thread of the bolt is fully clear of the nut. And is there a washer under the nut? Yeah, I'm being picky.
That was one of my (many) issues with my builder.
It's a fine looking rig though. Happy travels. Mick.