Good luck! If you end up needing to tune the mount's guiding performance there are informative threads here (in Mounts) and on CN. Let me know if you ever need any of the iOptron adjustment pdfs.

In your testing, have you set KStars or the mount as the source for date and location?

The issue with DST is (was?) that the driver/mount combination does not correctly adjust to DST. The workaround is to set DST=No in the hand controller and manually change the UTC offset by 1 hour at DST / regular time changeovers.

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