Is going from one preamp tube to another just a matter of making sure the tube socket pins are connected to the correct wires, as in #3 = plate, #2 & #7 = heater, etc... Is that all that needs to be take into account, provided the voltages are more or less correct, and provided I use the proper grid, bias, and Plate resistors ?

I am looking into swapping to another V1 tube with a higher amplification factor than the original, in hopes the new V1 tube can drive everything downstream a bit more, rather then the amp distorting at V1 heavily first. Swap is from a 6J5 to a 6SQ7.

Just want to make sure I am not oversimplifying the whole thing.

Thanks for your help !