Because I needed to get at the bed-screw behind the front panel to level it, I rapidly got fed up of removing and re-installing the mounts for the LCD.
The attached parts are my solution; a simple hinged mount so I can tilt it out the way to get at parts for measurement/tweaking, or tap the board cooling fan if it's buzzing annoyingly again.
With the hinge installed, the LCD folds (approximately) flat when needed, and lifts back up to the same position as the original static mounts when you're done.
The STL is a slightly tweaked version as to what's shown in the photos - the front mount's received a slight adjustment to make it stronger around the card-slot, as I was giving it too much clearance like the original.
Also attached is an STL for a clone of the original acrylic static mount, as I snapped one of mine in the first place after having removed and reattached it too often.
0.2mm layers, 0.4mm nozzle
The front and back parts mount using the same 3mm screws and square nuts as the original mounting.
For the arm, you'll probably want 4x M3 10mm screws, plus washers and nuts for the same.
Measurements taken from the original acrylic part as a pattern, then built up in Fusion 360