Thought I'd share some background settings for PP Zbox for those of you with issues like the Boat runs away ( accelerates) from 2 ball to 4.
99 SN GT 40 Acme 422 prop.
I set kx @+
, ball 1 @ 20 , ball 3 @ 30 and b4 to xit @ 20, kept Zbox value @ 11(factory setting)
Above settings is under Normal skier weight.
This made a dramatic improvement over the dreaded 2 ball flight, now apparently the time to ball 2 Will always be on the slow side no matter what settings I try (about 2 /100s) the big thing now is ball4 is dead on actual or 1/100 slow so no more chasing the boat as before where I was dealing with a 6-7/100 pickup between 2 and 4 ball.
Haven't thourougly tested this yet, got these settings out of pure desperation last night but it's a much better starting point than factory settings for this boat.