the problem with webbed fingers is unfortunately a limit in poser, that no bodypart can have two parents (this is also a huge difficulty with creating skirts) so how would you have the web affected by both the index finger and the thumb? the way you discribe it I don't see how it could work. the only way it could work is if for example all of the finger tips were the same bodypart than all if the middle sections were one bodypart then all of the bases were one bodypart, but you can see if that happens you lose all of your individual finger movement, you would end up with a mitten. Im not sure there is a solution to this. I would be interested in knowing how Les got around this shortcoming.