Does the 12.1" screen come with instructions? - I am not completely sure how to fix it to the acrylic X. On the Picade instructions for the 8" screen there are some black blocks to put through the holes in the X to stick to the back of the lcd to hold it. I don’t have any of these however - also due to the larger size of the screen, the acryllic X when tightened doesn’t lay flat to the back of the screen - looks like it will need more nuts as spacers.
I worked out how to connect the LCD to the driver board via the pics on the shop page - it might be worth including details of this with the screen though, to avoid it being connected wrongly (as the lvds cable isnt keyed).