My long journey of tweaking the frame design is coming to an end. The BigBox was designed for us to put it together, but in living with it for a year I realized that working on it was sometimes an exercise in frustration. Some components could only be adjusted or replaced by copious cursing, scuffing of knuckles, or strategic application of chicken blood Long story short, I don't want to ever again have to take apart any part of the frame for maintenance unless I am replacing part of the frame. I've gone through all of the DXF files and I think I've largely accomplished that. It's also much, much stiffer. I'll give a detailed description after I've lived with it for a few weeks.