Very likely. If you do find such a leakage path, before tearing the rotor
apart check the inside of the connector at the rotor end. I had a similar
issue several years ago with insect trash providing leakage between the
connector pins when humidity was high. The pot seemed normal, but from the
shack end of the cable I measured leakage (~850 ohms) between one of the the
motor leads and the top of the pot.
Cleaning inside the connector shell, backfilling with plain old vaseline and
sealing around the (useless) rubber boot solved the problem and has
prevented a recurrence.
----- Original Message -----
From: "David Robbins K1TTT"
My guess would be that you have a leakage path
> from the motor power to ground that it is adding a bias on the indicator
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