First time replacing heads and weird gasket issue.

4spdragtop said
The notches have to be oriented properly. Ive driven hours before for stupid stuff.....sounds like your machinist would fit right in that category.

I dont have a machinist, I just pulled the heads to replace a burned out valve and then did some DIY porting. Looking forward to seeing what the '73 340 is like now. Before it ran slightly better than my 318. :/