breather or oil cap?

Gotcha. I was thinking of changing the style of breather to see if that would help with the oil issue but wasn’t sure if that would make a difference:
View attachment 1716038239

View attachment 1716038240
Not sure what the underside looks like but there definitely isn’t anything like that already there.
These are Magnum covers. See the baffles?

1674418568700.png