The turning of the screw only changes pressure at WOT. Best to do while riding. Now take the screw and screw in till it bottoms out. Back it out 2 full turns and one half turn. Start sled and look at the gauge. The difference between idle and WOT is 4 psi drop for trail safe and 6 psi for short drags. Learn how to read plugs and piston wash as these drops can vary from sled to sled.
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