altair astro AA 80ED Triplet + AA PlanoStar 3" 0.79x 3-Element Reducer

[sloz1664]

Has anyone tried the Altair Astro 80ED Triplet with the Altair Astro PlanoStar 3" 0.79x 3-Element Focal Reducer?

I cannot obtain the Altair Astro PlanoStar 2" 0.79x 3-Element Focal Reducer, which is Altair Astro's preferred option for my scope - Nil stock. I can, however, obtain the more expensive  3" version which would certainly eliminate any tendency for vignetting on the QHY8 Pro chip. I just need to know if the focal reducer will give a good flat field.

Steve