What I typically see is that the ridge has been smashed flat. It often can be straightened back to a usable position with a hammer and variety of drivers/chisels.

If it has been worn off by accident, etc, it could be built back with weld, not JB weld.

I have also used other persuation to get the bolt properly positioned in its hole for alignment and then once securely tightened it will stay in place.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician