Recently I've noticed some rust in the cavity of my 7 iron.
So for the past few times after cleaning it, I sprayed some WD-40 into the cavity hoping the rust will somehow disappear.
However, the rust is still there. Just wondering if such rusting is a norm and i should just leave it as it is. Or is there some way I can get rid of it? Welcome all constructive advice. Thanks in advance GR-ians!
I'm using Taylormade TP CB irons btw.