" .. which ones work better .."

mopar66 said
... and how many of you go with the philosophy of cutting the header flanges between 1-3, 5-7, 2-4 and 6-8 for better sealing ? ?

thanks

I never even heard of this methodology, but I can see where it might be advantageous if the flange or head isn't perfectly flat.

Curious to hear who has done this...