Stuart,
Well, I finally have the MMOAG issue sorted, I am getting nice round stars with the additional distance from the STL to MMOAG spacer.
Not enough distance to use the helical focuser though, which is a shame because getting focus by sliding the RGH in and out is very difficult.
I know the focus does need to be perfect but it does not assist in repeatability.
May need to purchase the lens from astrodon to gain another 12mm or so and then I might be be able to use the helical focuser.
Thanks Stuart