Glad to Help Alex
This goes to show how the wings will effect the aiplane trim on every aspect of flying up lines ,Down lines ,and knife edge flight.
On my trim chart I say "CG will effect every aspect of the trim and design fuction" The little things get by us sometimes like, roll coupling ect. the more you demand from the plane the more a poorly trimed airplane will let you down.
This also works in reverse, when the inc. is to little and the C/G is too far back
Fine tuning roll coupling, is do able with a good design. all the way to perfection But , it takes time and patience.
A properly designed and trimmed airplane will do every manuever well, without effecting any of the others adversly.
Bryan