If you own one of them new fangled electric beasts and can't find the tubes you need to complete the project then this could be a site for you!
This may not be the cheapest place but Christian who runs it is very helpful and the service is very good. They also do a tube search. So if you can't find it, and they don't have it, then they will try and find it for you.
Anyway here is the link:
http://www.tubedepot.com/?gclid=COvKgJu ... 3godSD1dnQ
RJ