Originally Posted by High Wing Drifter
The text book generic high wing in a side slip theory is that windward wing (the one you call the outer), because of the high wing config will pool higher pressure air under the wing, whereas the leeward (the innerwing in your description) wing's underside will be shielded by by the fuselage so will be lower pressure and so will generate more lift. The result is that when side/forward slipping the windward wing will drop, making the aircraft unstable.
I might have got your terminology confused, but isn't it the other way 'round? The windward wing of a high-wing configuration will generate more lift due to the higher pressure 'pooled air' under it.
A