I am trying to put the lockring back on my BB after adjusting it to reduce the play, but I am unable to full tighten it. I can hand tighten the lockring, but as soon as I try to use my hook spanner to tighten it more, it kind of slips and becomes loose again.
Are my threads toast? Is my lockring warped? Or could it be something else?
I did this same maintenance on my bike less than two weeks ago and I didn't encounter any problems.
FYI: My bike is a 1980's Raleigh Capri 410 with regular threads (righty tighty, lefty loosey)