950 Ultra XP tuning on 500"

I'm still trying to understand the square jetting without a power valve in the secondary side.

I used 1:1 linkage because with a 4.56 gear it made it so I wasn't so far into the throttle at a cruise. But I had to square jet it and run a power valve in both sides to do it.

I should have written all that crap down at the time. I remember that I could run fairly small main jets and cover it up with the power valve. That was 1985 so I'm taxing my memory on IFR, IAB, PVCR, HSAB etc. I should have written it down.
The HP has 2 power valves..