Premier Amp Tube Swap

[Hal Iwan <haliwan@xxxxxxxxxxx>]

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Hello all

I have a Premier 120 w/o reverb that I would like to swap a tube or two to reduce feedback. I'm familiar with some of the Fender swaps but this being a Premier, I'm asking for help. Here is the tube layout from the back, left to right:
12ax7    6eu7    12au7    no socket    12ax7 all Mullards    7408    7408  RCA

Thanks for any help,

Hal Iwan