Hello,
I just joined this site and I am amazed at all the info. I am currently building 1/72 Shuttle w/booster and ET. I seen your shop on shapeways Homer very impressive. I will be buying the beanie setup next month. I redesigned most the the SRB myself, It's pretty close to accurate from references I been using. Still learning to 3d model using fusion 360. But as for your RCS thruster pack, there is a guy who makes that piece, Updraft models, I just bought it a couple days ago. I am going to try and tackle the the SRB skirt and shuttle tile work around the engines hopefully