Hi Matt,
Thank you, and yes I had already reached the conclusion re the 0.3oz on the inside.With that on the inside and tissue or the 0.2 on the outside the composite effect would still be there allbeit with a less resilient surface from hanger rash point of view.
One piece bipe wings get a lot of handling at assembly and disassembly - not funny in a 25mph gusting wind out in the open - we do not have shelters where we fly and it is mostly windy.
All good fun.

Brian