Looking really good. Can't wait to see the stealth fabric installed. It inspired me to waste a good 20 minutes of work looking at SR-71 pictures.
She's a gorgeous bird, bit of a leaky beast on the tarmac but good god could she move, did you know her wingpan shortened and her overall length grew by 2 meters during full mach flight

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On topic, I have started the fabric already as this glue takes a while to set on fabric, I might have it all installed in a few hours, could be tomorrow though we'll see how well it goes.
EDIT:
So panels are now covered

they require some fine tuning and the back panel also requires a covering of material but you'll see what I mean in the images.
Firstly cut material to panel size leaving a margin all the way around, Secondly apply copious amounts of Copydex to both surfaces and alow to go tacky (20 minutes or so) then squeeze each surface together.
After alowing to dry for 30 minutes, then comes the fun bit! Timming out the centers of the fan holes and as I've come to learn with using this fabric and the MDF hardboard when you use a hot glue gun they bond instantly and no amount of pulling separates them (winner winner chicken dinner).
Now with all the panels covered and wiped down free of marks and dust, they were giggled into place very tightly I might add, and the disappointed photos began, for what ever reason the white LEDs make the "Black" look very graphite Grey, I may have to play with some other colours and see what works best, but rest assured they are most definitely Black.