ok, no what I did was pitch it at 45 degrees forward so that the axis of rotation vector is now (x,y,z) (1,-1,0), apparently the mesh problem has happened due to the 30 degrees vector number being not precise enough to ensure perfect mesh rotation, not sure but this is my speculation.
so this solves the second part of the problem for now, though I used (internal) boundary condition not (interface), is that a problem?
secondly what could be wrong with the lift being zero (or very close to it ) from the report definitions.
I am now running the case with the 45 degrees pitch and will see how it goes.
this is it currently running
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