pitts 3rd flying wire

[bumper]

I have a pitts s1-e with a 3rd flying wire installed. My question is how do I tension it? I am using the aviat s1s manual. I started with the normal wires at proper tension and rigging. Then when I tension the 3rd wire set the landing wires are too tight. Of course. When you pull down with 4 wires and up with 2, the tension will not be the same.
1st I tried the landing wires at 650 and the flying wires were looser 450. The plane sang me a pretty song. So I went to 600 on the flying wires and ended up at 725 on the landing wires. Too loose on the flying and too tight on the landing. Any better ideas?
Thanks,
Peter

 

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