Magnum head porting for the beginner

Wyrmrider said
On my serdi I hardly ever used 90 degrees
you can hit water in the bowl
usually 80-85

Noise gone?

above the VJ, and chamber?

Yep, noise was gone... there was some roughness on the turn wall that could have
been the culprit.
Other than the common wall, I didn't do any reshaping.