Wow, I had no idea that Ramin was an endangered spieces!! It is commonly used in kite making, and that's where I usually get mine. Don, will be hard to describe the 5-point fitting, but would be very easy to see how it works IF I had a picture for you. Imagine a junction at the longeron, crossmember, and upright. 4 wires would be there, and a fifth would be your internal cross wire. Yes, the Proctor E-III does use these internal cross wires, very strong structure when completed, perhaps overbuilt.

John