Beernutz you are correct I am pulling tension on both strings but the 180 degree turn at 1H & 2H creates some friction and reduces the tension on 2RM. I don't know what the tension is on 2RM bit it's is something less than reference. I could measure it if you want but don't see any real reason. 1RM is the only string that is pulled at reference tension.
When using the Yusuki method for starting mains you pull two strings at the same time. When this is done, and I think that's what Paul and Prostringing believe I am doing, each string will have 50% of reference tension.
I have the ability to drive people crazy, not sure if I was born with it or I learned it but I'm damn good at it.