Tube Amp Archive

I switched the OT primary wires on the power tubes and it did the trick (cant belive I didn't see that) now I just have some buzz but I noticed I need to clean up my grounds. also i'm using the chassis and iron from a peavey triumph 60 and the wires coming from the PT i'm using for the bias voltage ...

It quits when I do that but the sound is nasty

I get hum and squeal from my dumble build with no guitar pluged in and the tone of the hum changes as I turn the presence control. I just cant figure it out. it's probably staring me right in my face. but any help would be appreciated.