I'm using the internal pull-ups.
The signal from the encoders reaches the PIC pins with the 10K series and 0.01uF to ground (as per Bourns design), but not if I add that 2nd 10K isolation resistor towards pins B6 and B7.
The original Bourns design has the pull-up/down resistors BEFORE the 10K/0.01uF combo.
(gonna do some experiments)
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