Pot jitters during ADC capture

[richard]

a voltage follower amp is really only a benefit if the signal source impedance is so high that the adc input loads the signal so much to make it inaccurate. it will not smooth out a crappy pot if anything it may accentuate it.
a lowpass filter will help whether its analog pre adc or digital post adc will make little difference
right now I'm working with FSR'S [force sensitive resistors] with 200k to 500k resistances on a pic 16f18426
no problem what so ever

what do the pots perform like when measured on a ohmmeter [an analog one would be ideal]
if they are really that bad then the resolution achievable will be low no matter how you go about it
especially if there are dead spots