WHEW... that's a tough question! The assembly itself was laser cut with, MDF, metal washers and "I" Bolts attached to the bottoms of the actual throttles. I'm going through each page trying to find images of the assembly - unless you've already found it? The only suggestion I have is to create the assembly first before cutting ANY holes into the actual housing. You'll have to know all the near exact spacing between each throttle. Then transfer those measurements to the housing. Hope that makes sense?
If you're going to replicate the TFA version check out this 360 Pano View of the Cockpit
Step inside real Star Wars starships -- thanks to StarWars.com's panoramic photos!
www.starwars.com
I used this pano view to help fill in the any gaps we had for the ESB version. The throttle housing appears to be the same but the greeblies and 2 throttle trim piece are all different . But you get a great close up of all the details!