I highly recommend Becky's DVD. It gives you some details like how much higher the back beam needs to be than the breast beam, etc. It would have been difficult to build this drawloom without that DVD.
I'm going to have to start doing that too I guess. I'm not sure how to decide what is "questionable" though. I don't remember where I got this yarn, so maybe I either have to start adding notes to each cone or just start testing them all. . . .