I opened up the back the other day to check for a little rattle, and noticed that the 2 ELs were different sizes....that's strange I thought, as they were both seated OK.
Honestly, I hate having everything perfect with my gear.
If it hums, great. Slight ground buzz, no problem. squeals... cool.
I guess it adds character to the sound.
Probably not the best for recording, but for live sound I definitely like it.