In response to your questions:
a. I am using the EKOS polar alignment. I do the following: I try to get more or less polar aligned and then I use the procedure to take pictures at -60 degrees, 0 degrees and +60 degrees RA. I make the camera point straight ahead so declination is 90 degrees then I guess.
b. No, I have not but I plan to.
It's interesting you point out you had a similar experience with the Ekos PA. Can other people confirm this as well ? I will look at the PHD2 align when time and weather permit.
Thanks for your feedback.