Do you have the frame? Presumably easy enough to inspect the holes and see if there's evidence of rust. If there's no rust, it looks like the stripping was too aggressive. I'm no expert on this stuff though.
@hippy started
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Do you have the frame? Presumably easy enough to inspect the holes and see if there's evidence of rust. If there's no rust, it looks like the stripping was too aggressive. I'm no expert on this stuff though.