hades replied to the topic 'Problem with GPG (PEC) when guiding' in the forum. 9 months ago

The EQmod driver doesn't know about the index on your RA axis. This index is only used in case the mount runs it's own stored PPEC, so not applied in case of GPG RA.
The EQmod driver can use predefined RA worm cycle period you've entered into the field. Or you can let the Ekos to measure the period, by ticking the option Estimate Period.