I have a Fender Super 6 Reverb amp (silverface)- the tone of the amp sucked when bought it in 1989, so i had it hotrodded - the guy put in a preamp gain knob in back and another know that seems to behave as an attenuator...not sure what all he did. anywah i was happy with the sound back then being a young metal head and all. But now i want the fat bluesy sound and have figured out how to use the attenuator to 0verdrive the power tubes - a-hah!! ok, so i checked my tube bias and it is WAY cold. and there is no bias adjust pot..... I read an article on the internet about how to add a bias adjust pot for these amps (they are the same as the fender twin reverbs), and it said use a 100Kohm, 1/2 watt pot- but when i went to get one, the pots i saw listed as amp bias pots all seemed to be 10Kohm. so i want to make sure of what i am putting in my amp so i dont blow it up!! Can anyone give me some input on this so i can get it right?