Hey Shredd6, My owners manuel has the V positions listed in the Tube Change Guide. I looked it up online at Carvin.com, but its the same instructions that came with the amp. Just fill me in on which one of the tubes you sent goes where. I should be able to run with it.

Usually in most preamps, your V1 is the one closest to your guitar input jack. And it's usually covered with a shield.

I did label the boxes with V1-V2- V3 on them.