The question as to how much of the lug is masked is an old one. Some say that lug lining was invented to hide the masking "issues"

I'm happy with the panel paint also coming up the lug's wall. This is pretty straight forward to mask, tape and trim. Tedious but easy. A couple of tips. Touching up paint (with a detail brush) after pulling off masking is legit. And tooth paste is a cheap masking agent. But like many skills practice make better results. Andy