NMcGuitar ...........
Before you sell it and take a beating, stick a 12AX7C in there. They are less brittle and much more warm and linear.
If you are in the L.A. area, let me know, I will give you one for free that I would hand select for you. Sorry, but I don't have enough hours in the day to mail stuff, no matter what folks offer to pay.
You can also maybe find somebody in L.A. if you are not here, work some sort of deal with them, and I'd be more than happy to give them the tube to send to you ...........
OR ............ you can contact Ludovic Pierson at www.tubecellar.com who is in LA that I see all the time, work out a deal with him that if I give him the tube, you'd pay him to box and ship it maybe.
Any of the options is fine ...........
Or ......... contact Doug Preston as www.dougstubes.com and he might sell you one real cheap, just tell him that on his VTV tester, to find you a 12AX7C that reads BELOW 95. He has a lot of great stuff.
In any case, any of these sources should be between free and less than $10.00, so try that before selling it. Thanks for the advice, and the offer! Since I'm in Washington DC, I guess I'll give Doug Preston a try. I'll let you know how things work out.