Wished I could help Chad. I always planned but never got to look at DTT I.
The most confusing thing to me, is doing the bottom loop correctly with out it looking like 2-3 separate bundles but looking like a cohesive group. and all the while keeping all strands same exact length, so the finished product doensn't have strands that are obviously off.
I have tried counting the twists on the top, and pre twisting the bottom bundles. I have tried over pretwisting. More I screw with it the more uneven the strands.
I don't think I am the only one struggling making quality. So that is the area I suggest stressing.