Timing Chain Tensioner Question?

Probably not a big deal.....but they do fail, as attested to. That is experience that can be ignored or used at each viewer's pleasure. The Opel ones I dealt with were 100% solidly reliably (and a LOT better built than the ones shown here).. but that does not mean they all are.

I'll bet the one AJ used 19 years ago was not made in China!