They make nice accessories for the pax it's expensive as fuck it'd be like $50 for the 3d stainless steel screen + bowl clamp + vented lid but that's the way things go with these little aftermarket niche custom made products.
Yiu can basically reduce the standard pax bowl size to 1/3 to 1/2 or whatever, and it'll heat faster on all sides vape more even, and quicker so bigger hits faster i dunno if you end up not being able to do full bowls. Sometimes i take screens and make little half bowls in the Arizer if my tolerance is low