[Phlogiston]

Those are great caps. I use them in situations where a film cap is simply not viable. This fits well with those devices since many of them used factory caps rated at 160V or 350V. I agree that they should last a long time.

I have been doing the film cap replacement in hundreds of radios for myself and others and have yet to have a single failure.

P.S. Ron watch those 500V electrolytics. The leads seem to be spot welded on and can break off if twisted.