What pressure ranges were you trying and what type of riding do you do most?
Since you have compression adjustment capability with the QS3 knobs you should be using the air adjustment for ride height, some bottom out resistance, and weight transfer in the skid. The air pressure is the spring and supports you and the sled. As a heavier rider upping the spring rate (more air) is the most significant change needed. Heavier spring rates should have more rebound damping to control them. You'll know this is the case if you get a bouncy, pogo stick feeling. Can't adjust this without a re-valve.
After pressure's somewhat sorted then use the compression knobs to adjust how soft/stiff the sled feels over bumps, jumps, and terrain. Generally the more aggressive you are the more damping you'll like. you can start with the knobs on 2. Then make one change at a time. If you like what you did then great, but if it seems worse try it the other way. If you have a setting with lower air pressure, QS set to 1, and it feels harsh, you are likely riding too low in the stroke and you're going to feel it packing and bottoming. You can also make it feel harsh with low air pressure and QS set to 3 because then you have little stroke length to work with (I know that's what she said) and the compression is jacked to resist bottoming, but also giving a harsh ride on small bumps. So it's not like there's set rules for a relationship between air pressure and QS settings.
I haven't gotten to ride the stock 2019 stuff, but If it were me I'd start with the ski shocks at 75psi QS2, front track shock at 65psi QS1 (deep snow) QS3 (trail), and rear track shock 140-145 QS1-2 (deep snow) QS2 (trail). I'm 270lb, fairly aggressive rider, and prefer a taller ride height with less damping feel.
Also disagree with the "floats aren't worth revalving" comment. I think the more progressive air springs work well for bigger folks. Spring vs. air is a preference thing.
