There was some cavitation issues in the "injector plates" of the F1 where the LOX and kerosene mixed with was resolved by drilling holes in it until it went away - there was no method to the pattern just drilling holes in a pattern until it went away.

Also each F1 differed slightly from the engineering design as they found issues and fixed it en-situ.

In short copying 1960's designs today is not going to work.