The big sleds like that like to be setup tight. The front should be at the 2" minimum, and pull down the back until you have as much track on the ground as possible which is probably no more than one hole showing on your limiter straps, if that, and chaining the rear at least 3" down from normal ride height the rear will proably be set full soft on the blocks and the middle shock near to full stiff. good luck
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