I could have sworn on the slant site they said face the opening towards the exhaust valve.

I know I smooth out the pocket where the plug is for flame travel towards the exhaust when I grind the chambers.

From what I have read indexing is worthless on the street, and mild race applications.

Cutting the ground strap might do something.

"The only thing to do for triumph of evil is for good men to do nothing"

"NUNQUAM NON PARATUS!"