I have a Fender deluxe VM combo with 2 x 12AX7 in preamp & 2 x 6L6 in power tubes.It has a 1-12" Celestion G12P-80, 8 Ohm Speaker.I tried it just pushing a Celestion V30 in a closed back Avatar ext cab.Same result so i'm convined it's the tubes. My problem is that i feel like there's a blanket over this thing and it's driving me nuts.Tried tons of different settings and a Boss GE7 EQ pedal through the loop and in front.The clarity and mid punch is lacking. I want to like this amp for the simplicity and features of grab & go/combo set up,but surely this thing is capable of sounding better? I know i'll have to have it re-biased,but i'm willing to spend the $ if you guys can give some good brand/type tube ideas. Any help is appreciated. Thanks.