I'm trying to build this , but I don't want to include P2 and P3, I just wnat to use it as a preamp. How do I go about removing them from the schematic? I basically want it to be as if those pots were always cranked right up.

My electronics knowledge is a little rusty these days, so I'm not 100 percent sure what to do

Any help is appreciated
you can replace the pot with a 100K resistor and the part the attaches to the wiper of the pot can be connected directly to the left side of that resistor for both to run those at full blast. if i am wrong, connect the wiper part to the right sides of the resistor. i think you should have a switch to connect to either side of that resistor.