Just got my 4 today and normally 3 of the 4 are close enough to click the flight path but the 4th is almost always off by enough I have to move it. Tried about everything I would think of to no avail. Close enough for most things, though.

[edit] Found the problem. Had the resolutions set to the same but my UI scale was off. Soon as I set those to the same, works like a champ.