Get the book from Pierce or call them they always help and willing to talk. We are on 600 LF 650 RF 200 RR spring on top and 225 LR with the 6th pinned no 90/10 and 1/4' pull bar preload, 55 left I believe and 56% rear. Is as good a place as any to start, its pretty close to the book you have to read it a few times to see all their baseline settings though, we are on a jbar, driver didn't like the harshness of the short bar.
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