Bias Pot Mod Crate TV-120

[ManRay]

I am trying to learn how to install bias pots in my fixed bias Crate TV-120 so as to individually bias each tube for my sonic electronic experimentational pleasures.

I have exhausted myself on this forum trying to sort things out for myself and am now calling in the experts. If you lovely chaps can point me in the right direction, tell me which resistors I should focus on, or break the thing down for me in any other way, then I would be most grateful.

Included in this post should be a copy of the schematic.

Thanks again for all the help.

[ManRay]

Again, I am trying to install individual bias pots for each of the 4 tubes in this amp. If any of you can help me out, RWood, Enzo, any other people who have experience with this amp? Any information at all would be greatly appreciated.

Thanks again.

[ManRay]

Anyone want to point me towards the right literature to assist me?