Slewing, solving, guiding works in general all good. One issue I have is that I await my Telecope to be slewed to e.g. the eastern side of the mount when my target already crossed the Meridian to the western side of the Meridian and vice versa. I often need to wait way longer than set in the mount settings until KStars slews the telescote to the right side which costs a lot of patience. It seems to not matter what I set in the mounts hand controller. So my first question is if there is a hidden setting in KStars/Ekos that allows me to set a Meridian-distance-limit to avoid the the mount slews on the wrong side (and risking it to run into the tripod)?

There are no hidden settings in EKOS that I know of.
AIUi you are saying that when you command slews the mount does not end up on the side of pier that you would expect, I suppose that you mean that it you command a slew to a position where the mount should be past the meridian and so in the East (pointing West) state the mount ends up in the West (pointing East) state but still pointing at the object.

This can happen if the mount has a different idea of where the meridian is to Ekos, usually because of a time zone or DST setting problem. INDI isn't very good at managing DST because this isn't in the indi time strucure.

I suggest setting the DST to off in the mount and adjusting the time zone offset appropriately.

You should get a situation where slews to objects cause the pointing state (pier side) to change close to the meridian.

The second - maybe related - problem is that nothing happens when I tell Ekos to do a planned Meridian flip. I set the limit to 3° (as suggested in the tool tip in Ekos, 2° less than the mounts limit). In Ekos I also see nicely the remaining time until the flip. If there is some imaging going on it nicely waits until this is finished and then... nothing. Only a short movement of the scope and the timer tells me again that the flip will come in 3 min. Also, it tries to solve and refind the target (like parts of Ekos think the flip was succesful) but the solver totally screws and corrects in the wron directions with the result it wents further away from the target istead of getting closer. Is there any idea from the community if I may oversaw a setting, a little hook or if there is wrong combination of KStars/Ekos settings vs. the mounts hand controller settings?

This bears out the hypothesis above. the short slew is an indication that the mount is not changing the pointing state. The pier side display in EKOS should bear this out. Ekos detects this and should retry but it the mount meridian is an hour out it will tke an hour of trying before it succeeds and something else may happen first.

Try setting the DST in the mount to off and get the mount working then experiment to see at what hour angle a slew will do a pointing state change. With DST on I think you will find that you need an hour angle of more than +1 hour before the mount flips.

The EKOS munt tab should give useful information, the hour angle and the pier side, which should help with this.

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