Yeah unfortunately they must have been impatient or something. I find it hard to imagine that some pb blaster and waiting couldn't have saved them.
I'm honestly not sure if they'll sit completely flush or not, but I imagine maybe some rough sand paper or a dremel could smooth them out easily.
I would do half ($60) for just the 10mm's and then shipping would be less too. Let me know if you would like additional pictures, etc.
2010 335i - JB4, BMS DCI, BMS AE's, CF Wrapped Interior