Sliding pot does not read anything other than 0 or 1023

[TomGeorge]

Hi, do you have a DMM to measure the resistance of the pot?
Set the slide about midway.
Measure between pins 1 and 2.
Measure between pins 2 and 3.
Measure between pins 1 and 3.
Tell us the values you have measured.

Thanks.

Tom.....