Ok did some testing and I'm down to the 2.2gr=13.2gr and it's almost perfect I'm in the powerband just not quite the peak.
I need to go a pinch lighter but I'm very close maybe a half a gram away from the golden Zone.
JBOT somehow I miss read your text message I thought you were saying I needed to go 2/3 grams heavier.
That's what I get for multitasking.
Just for Giggles in the morning I'm going to try 12gr and see what that does.
Now for those of you running a promo pipe you'll probably be fine with about 16gr with a soft spring.
I can't remember exactly but when I tested the spring the last time I ground it down I was around 18 or 20 pounds at compressed height before variation with my setup.