How reliable?

[heathkit tv]

Don't know if this has been touched upon previously so forgive me if it has...am wondering if after recapping and aligning an early color set, how reliable might it be?

I suppose running it from a conditioned power source and perhaps adding ventilation or cooling of some sort would help.

I'm speaking of tube style sets, 60's and later. My understanding is that the earlier ones are less reliable overall and the picture tube life has to be considered. What say you big brains?