I have tubes that have tested "GOOD" at 65% and others at 85%. Also, only 2 that tested "BAD" at 25%-35%

So, one would simply conclude that any test results showing in the tester Green Scale as "GOOD" is acceptable. But we all know any tube less than 100% is showing signs of age and possible performance.

I/m looking for feedback from the experts, what level should be the lower threshold of acceptability. Should tubes below 65% be replaced and those above installed ?

I want to have some level of confidence after replacing all the capicators and bad/questionable Tubes this unit should work correctly as expected.

So, what is "GOOD" enough ?
Comments ?