Hi Dale. My east side have some light pollution from nearby homes and west side has some trees that's why i went closer to Zenith. But I can try something in the vicinity.

Plate solving is only an issue when mount is not calibrated (manually as I figured out) properly. If It knows it is parked right, plate solving never fails unless there are clouds or other typical issues. So I believe there is conflict happening between mount's location and what NINA calculates which causes the plate solving issue. 

Yesterday before I started the sequence I pressed the "set as park" button on NINA after setting the mount to park 3 position (see the process I follow for manually setting it to park 3). Some clouds showed up and I decided to end the sequence earlier (before meridian flip). So I pressed the park button on NINA and mount came back correctly to Park 3 position. I wonder if it would have done the same on it's own as well. I will try to check that tonight and let you know tomorrow. I'm hoping the mount will park in right location unless it loses the sync post meridian flip.

Thanks for sharing the manual setting process. Since I have to move the mount to park 3 in morning and my batteries are fully discharged so I move it manually after loosening the RA and Dec screws and in the evening follow this process before anything else.
1. Turn on camera, focuser, fw and telescope in NINA. This opens up the mount ASCOM window and automatically unparks the mount.

2. Expand the ASCOM window and select Park at current location

3. Then I select unpark from Park 3 position

4. This is followed by Park to Park 3 (mount does not move)

5. And finally unpark from current position.

This always syncs the mount and everything works flawlessly (slewing to right location, plate solving sequence etc) except for mount not ending up in Park 3 after sequence ends.

I didn't have to follow this process today as NINA correctly parked it at Park 3 last night so will see if it goes to right location tomorrow morning.