Now you have said that I think I have seen some, well one anyway perhaps it was even in my sub store...! (disappears stage left with torch and overcoat)That's what I'm going to try, I don't want to alter the ones I have and will probably make some with more drop, they did make some by the way, they're the rear ones with more offset to clear the panniers, when fitted to the front will give more drop.
Just remembered a friend has a pair, I shall have to see if I can borrow them to try.