Malicious damage is to the sidewalls normally. This doesn’t sound right. What kind of nails are they? Some nails and screws won’t leak until the head wears off. I had a screw take 2 months to start leaking. (I knew exactly when and where I picked it up.)
Firstly, thank you for your input.
I'm not at all sure. While I do spend time where there's a lot of metal shavings, nails are not present at all.
I really don't spend enough time at areas that would have metal shavings. And I do get flats WAY more often than the rest of my team combined (there's 30 of them) and most of them work at sites where there's WAY more metal shavings.
You seem to know a lot about this issue, whatever you can give me, I'm thankful for.