Try this:
Rebound: full fast (counterclockwise). Turn it in one click at a time until you just barely slow the bike down. A fast rebound helps the bike track terrain. This is personal, but I'm amazed at how slow people run their rebounds and let their Packs pack up.
Bottomout adjuster knob: Half way. There are three lines around the piggyback canister. Turn the blue knob until the middle one is just barely visible above the top lip of the knob.
Boost Valve: 140psi
Play with the Propedal knob all you want. Mine does nothing. If your bike bobs too much, try adding boost valve pressure about 10psi at a time instead of wasting a lot of time with the Propedal.
Measure your sag and make sure your spring rate is about right. Generally on that bike, three times your body weight, then round up to the closest 50# increment is right for the spring rate. So 175 x 3 = 525, rounded up to 550#.