Hey all, I have a 5E3 Deluxe chassis I want to repurpose. Unfortunately, it only has 2 preamp tube holes and I need a third. Is it too close to the others if I situate it in between the two already there? That would give me 1.25" center-to-center. Or, could I use an octal to noval conversion plate and use the unneeded octal tube hole (I only need 2 octal holes)? For reference I'm building a clone of the single-ended Supro 6422, with reverb, but sans tremolo. Thanks, y'all!