Shred,
it was sensative to your PP2 transformer so far...my supacharger is fine...you saw it yourself and so was with everyone elses so far...it takes One-spot surprisingly well too...
.....
whats next Shred ....
Well, the PP2+
has a magnetic field above it. I knew it from the beginning because putting a tuner on it would result in a nice G#-ish reading. Placing various other transistor based drive pedals on it would result in similar (though varying) results. Skreddy Screwdriver, muffs, fuzz faces, etc etc.
That be the issue with the PP2+ and since the Supacharger doesn't have it, more power to it and its cheaper. Heck, I'd purchased a Supacharger if it was available when I needed a good power supply.
But to say that "it", meaning 7th #3, and only
my 7th will exhibit the hum when placed above a PP2+? Well, I'd prefer to believe that the 7th in general isn't as immune to magnetic fields, just like the other transistor-based drive pedals I've had.
What's next is just the next logical thing to do - crack it apart and see if there's anything "wrong" with it. If there's nothing, then it goes. If there is, then good, something can be done... or if nothing can be done... off it goes.