Any opinions on what I've done right/wrong? Heads are 915's w/2.140x1.88's shaved .028 to 71.5ccs. Intakes are back cut, home brewed generic guides w/4 angle valve job ( 30/45/60/70-done in my back yard with a swap meet Snap On seat grinder) Ports are untouched with the exception of removing flash, I limited the heavy grinding to the bowls and cleaned up the short turn. I opened them up on the major side with the intent of keeping the mix active. They were run on a 9:1 440 shortblock w/steel shims for 30 minutes (just long enought to wipe the cam) Any opinions on the swirl pattern on the quench pad? Did I ruin them/maybe improve them/whaddaya think?