So I've bought a complete new set of tubes for my Ampeg SVT-CL. Everything was going fine until I was left with 2 - 12AX7 PreAmp tubes, and nowhere to put them. I have scoured the Ampeg site, and nothing. Someone please help. Where do they currently live, and how do I get to the to replace them? I installed 2 - 12AU7's and 1 - 12AX7 in the driver tube section. Where do the 2 - PreAmp 12AX7's go? Any help would be appreciated.