NEVER any reason to apologize for response time with me. I just carry on, but I try to stay organised by creating new posts when I carry on rather than post edits (sometimes I edit 
). I am sorry if that seems like I am pushing, I am not , I am just trying to stay organised.
You have provided me with much help and guidance which has provided much advancement in the ‘education of Dale Kramer’, thank-you.
I have lost all track of time in the last month and it must seem that I am on a madmans schedule, but in reality I have no schedule. I have just been wanting to use FEM for so many years and it looks like now is the time. 
Such has been my life, watchout when I commit to something.
My single solid geometry is as clean as I can make it, I am hoping that is not the issue.
My geometry is refined as simply as I can think of with a Background Mesh Box generously sized (I think anyways ) . The method was, one region refinement encompassing the whole plane plus a few feet, one surface refinement on all surfaces to a single level (where Min level=Max level) close to the last layer thickness and then a 3 layer layering to a yPlus of 160.
On SRF3, my Level 0 cell dimension was about 14 in. x 14 in., which makes Level 7 at 0.111 in. square. My 3 layers had a final layer thickness for yPlus =160 of 0.107 in. (using reference length as the length of the whole aircraft).
Here you can ‘see’ that my region box was Level 3 refinement and the ‘All surfaces’ refinement was to Level 7 (I think the cells added during layering also show up in level 7 quantities below for some reason):
As far as where to go next…
I will research what the SnappyHexMesh quality checker looks for and try to get ‘fourth’ and 'leastSquares’to converge and then see how those options handle my mesh in a full study spread. In addition, I will likely run a study spread on the already converging cellLimited leastSquares scheme (Test #4).
Now back to bed for me 
Dale