Hi Paul,
Thanks for investigating this, I tried what you suggested and found that I still got vary jagged lines.
My comp size for my footage is 1440 x 1080, I made my gradient comp 8000 x 6000. Resized the gradient comp in my 1440 x 1080 comp and still got the same jagged appearance, as before not any smoother
Did you achieve a fairly smooth output? Have I misunderstood your instructions?