I did consider the camber of the road having an influence and, here in the UK, right turns would generally be 'off-camber' but that doesn't explain why 'you lot' have difficulties with right-hand turns. I can, however, throw another possible explanation into the mix: predominantly, you control the lean of a bike with the grip that's on the inside as you turn: the left-hand grip is fixed and therefore you know exactly what it's gonna do; the right hand (throttle) grip moves and, of course, if it moves too much, you change speed (also, possibly, direction)...thus, I think, you can't have as much confidence in the right-hand grip for controlling the bike.
I've not worded that very well (it's late, I'm tired, etc) but I hope you get my point.
neill
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