6G3 summing resistors

[EFK]

I'm working on a project which has two channels, both different, into a LTPI. One channel is the 6G3 circuit (the "bright" channel, which really isn't very bright stock...), but since I'm using a single 12ax7 for that channel, I'm in a bit of a quandry about what to do about the 220K summing resistors which normally would be between the gain stages in a real 6G3 (as the second stage of a brown deluxe is a shared second triode). Since I'm using both halves of the same triode for the two stages, I don;t need the 220K resistor between stages but rather I need it at the input to the PI to isolate this channel from the other channel. So what to do? I'm sure the 220K between stages on a "real" 6G3 must attenuate some signal, as right now it starts to break up pretty much at about 1 on the volume, but if I stick it in there where it normally would be then I'll have a second attenuating stage at the input of the PI - or at the least some treble attenuation probably, which a 6G3 certainly does not need - for this channel which I'd like to avoid. Could I run a resistor to ground between the two stages, off the input to the second grid, to simulate the 220K in the stock circuit? If so, how do I determine the value that would roughly equivocate to amount of attenuation provided by the stock 220K summing resistor? Any ideas here?

[txstrat]

As far as I understand it if you run a resistor from the grid input to ground you'll change the bias point of that stage which would normaly be set by the volume pot acting as a voltage divider.
I'd leave the 220k in between the stages. You could bypass it with a small cap (say 47pF - 250pF) and see if that leaves you enough treble in that channel.
BTW the 6G3 is known as an overdrive monster which is not trebly but way more midrange-heavy.
I'd then use another pair of 220k resistors to mix channels before the PI.

[EFK]

I've still got the volume and tone between stages, but just had to move the 220K from immediately after the volume pot and before the 2nd stage grid to after the second stage and at the input of the PI. I think the end result is subtle, but I think I'm getting a bit more gain than a real 6G3. However, I'm worrying that adding *another* 220K in between stages will reduce signal or treble too much. I guess I'll ditch the resistor to ground idea and stick another resistor inline - maybe I could drop back to 100K or thereabouts, and I like your idea of the small bypass cap: definitely will experiment with some values there.