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I have a new set of Ross dome pistons .030 440.
They have a "ridge" between the valve reliefs. I hope you cansee it in this picture.
Q: Do I need to remove this ridge? What about the other "sharp" edges on the dome and around the plug relief? Should they be masseged or run as is?
I just realized that in 20 some years of racing, this is the FIRST set of NEW pistons that I'VE ever had! Always bought someone else's hand-me-downs.

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I try not to run any sharp angles in the comustion chamber, take the sharp edge off with a small knife, don't take a bunch off, just round the edge off so it won't cut you or feel sharp