I'm 160-165, Butch. Not heavy, not light.
There is only one reason I can think of that your Bashlins would have wallered out, and that's that the mounting screws got a bit loose, and you climbed on them that way a while before you realized they needed to be cinched up snug again. When a smidge loose, the wallering could happen pretty fast, I expect. Maybe it happened repeatedly. Once it started, tightening wouldn't have done much good stopping the wear, and it would just get worse every step on them.