I want to modify my blues junior so that, when the fat switch is on, its first triode will be similar to the first triode of the tweed bassman. Problem is that, the cathode of the first triodes of each channel in the bassman shared the same cathode cap (220uf) and same resistor(820ohm). From what I know, to convert it back to indidvidual triodes, the resistors have to be doubled (hence, 1.5k), but what about the cap? Do I half it (and thus use around 110uf)?

Thank you in advance.
Ibanez SA-120 (ed.2006)
BluesJr 1996-B + cathode follower + texas Heat
Crate CPB150
Homemade 4 x 10 cab Bass closeback
Metal Muff