The reason I ask is because smallblock Mopar head valve cover rails are not flat from front to rear.
They are arched about 1/8 or so in the center and cause the ends to leak.
The engine is a 273 commando and the valve covers are M/T cast covers. It is for sure leaking from there but i believe it is due to the massive amounts of oil spewing out of the 4th bolt hole on the rocker arm. The slant i had before oil the same way i belive and didnt have that issue. I have a oil gauge that ill be hooking up so ill get a better reading of the pressure and maybe its too much pressure???