Specs:
Tport: 0.156 Barrel Port: 0.156 Valve: Throat: 0.210 Valve Exit port: 0.167
Intake: I opened it as mush as possible and still have material to hold the spring. Also drilled two hows to allow outer flow.
Now The pictures:
Here is the mod to the shroud holder:
There has been a significant power gain. I'm topping out at 980 with JSB kings and I could add more hammer if I want to. But I brought my hammer down to about ave of 890. My shot count increased significantly and my efficiency went from to 1.304.