Thanks Luke. A little further research has turned up something interesting. I had mistakenly set my clamp box on the left side (90° from the red button and rabbit ears) just in setting things up. It seems that the clamp actually should be 90° to the RIGHT. However, to me, being right handed, this means that the clamp sits smack in the meat of my right hand, which I don't find particularly comfortable. Is this how most people handle this saber? If the clamp is to the left, my right hand has an unobstructed grip, and the clamp fits nicely between the thumb and first finger of my left hand - much more comfortable. I suppose since I'm doing a hybrid that isn't screen accurate, I could do this my way.
On the D-ring, I had set the tape on there based on one of the photos of Yoda's Graflex V, but after reassembling the saber, you're right, the D-ring would be sitting at a funny angle. I am going to readjust before drilling, and will take a new shot of the tape's orientation. I hope to get this done this weekend, but my Vikings are playing the Bears tomorrow for first place, so time is limited! :D