Sounds pretty sweet. I've been listening to Classic 30s lately, and I like the amp. It sounds like you tightened up the distortion a lot. It seems to live between rock, blues, and metal. I actually like the Classic 30 for its more open crunch, but I can see what you did with it. It's actually pretty cool.
How did you mod it? Did you use a kit? Is it a common mod? Or were you just futzing around? I have done a couple of futz around mods that are good sounding. I ended up burning out some contact points on one amp from too many resolders. I'm actually hoping to fix it this weekend. Then leave it alone.