Ghosthouse,
FWIW my experience with Tesla tubes, E34L, KT 88's and KT90's has been poor. I've had many failures due to quality control and stopped using them - Got tired of having to replace resistors in the amp when these tubes shorted out. I understand my experience is far from uncommon. I also find their small tubes somewhat unreliable, noise wise and otherwise, but their cheap so I still use them when I want their tonal balance.
This quality issue has nothing to do with The Tube Store, although they could just stop selling them I suppose. Jeeze, just a 1000 hour life! No comment on the matching service - if they fail at this, they are not alone! I've gotten some bummers from others as well. Caveat emptor.
FWIW.