Terry,
I have an AVL engine, K&N pancake, Megaphone exhaust (with silencer) and the PWK 30mm.
122 main
38 pilot
Needle collar in the top notch
19mm float bowl height (I believe they come stock somewhere in the 20's).
Air screw out 1.5 - 2 turns.
Like baird, I was suffering from a rich bog until I took my main jet down to that size. As with baird's my mileage is lower than stock. Mid 50's usually.
You have JRC Engineering in your link list. They supply NField gear with the PWK and parts.
Good luck, and definitely use that "float-bowl drain hole" main-jet trick baird mentioned to save you a truck-load of time.
Do a search for "PWK flat" and you'll find lots of troubleshooting discussions - Usually me breaking, and everyone else helping fix.