I have now done the hack with the P10 mask to address the turbulence noise I had on inhalation. Don't know what causes it, as I've looked for kinks or orifice effects, but it was real. The hack works wonderfully, quiet as a mouse on inhale and exhale, and the additional flexibility of extra silicone rubber makes it even more comfortable to wear.
Another hack for me is to use a sharpie pen to guide and center the halos onto the nostrils. The sharpie is fat enough that the halos will only slide down a bit and leave a nub that can be placed against/in the nostril slightly, sliding the halo up and pressing into place perfectly centered. Small nostrils needn't apply, just makes it easier to get them where they belong.