I know exactly what you mean Terry but in my case the most virulent Virus is probably
me - tinkering with setting I should have learnt by now to leave well alone.
I was reading an article, from years gone by, where customers complained that new vehicles were no longer supplied with a ‘tool kit’. The makers claimed that their new models were now so reliable that the tool kit was no longer necessary.
I have a sneaky feeling that not providing their customers with a tool kit probably caused the largest, all time, single increase in vehicle reliability.

Tweakie.