Valve cover leak

Hi, lordships.
Recently, with disgust and horror, I found a very slight leak in my 2.8 (not hitting), namely on the valve lids.
Strangely enough (?) at the places where they are screwed, exactly where the nuts are, and not at the seal itself.I've never actually seen any leaks in those places.
Well, no matter where, it has to be fixed.
My question to you:
Is the problem solved if I unscrew the lids, put in new seal and screw the lids back on,or do I think it's too easy?
Thank you in advance