[overbored]

Never had a problem but I do not use loctite or anything on the fittings. The instructions do not mention using anything. where did you put life caulk on a sta lok, that would be like putting a lubricant on the fitting. A big no no in my book. Only time I have seen one unscrew is on a forstay with a furler foil that was below the fitting. Harken now say to not do that.
http://www.stalok.com/t-stalokterminalinstructions.aspx