Line 6 Spider Valve Tube Preamp

[JustMike]

 I'm interested in doing this mod. Strymon used to make a kit called the SV pre, but it's out of production. It basically replaces the SS pre with a 12ax7. Since it's a tube amp, I don't imagine this would be a difficult mod to do, but I need a schematic. Can anybody help me?
 Thanks.

[kagliostro]

As they discontinued the kit, ask if they can give you the schematic

Kagliostro

[JustMike]

 I've tried that. So far, I've gotten no response.