I have one guitar that only has the capacitor (no resistor), and one that has both. Since they are two completely different types of guitars, I cannot compare them and draw any reasonable conclusion. In both cases, high-end is retained when the volume pot is rolled off, so they are both working. But I did the first mod without knowing that there is supposed to be a resistor in there also; the second one was done "properly". What effect does that resistor supposed to have on the tone?