Rejuvenating a couple of new old stock tubes

I have a couple of (probably) new old stock EC92 vacuum tubes which were testing really poorly. In this video I try to rejuvenate them.
More detailed info on vacuum tube rejuvenation:
www.6v6.co.uk/...
WARNING: Do not attempt to repair electronic equipment if you don't know what you're doing.
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Electrocution logo:
Nesdon Booth, The Noun Project
License codes:
UASZX9WKDUXHX27W