Just going back to the review you left on my page: It totally defeats the point of using LEGOs if you're going to cut them. Just buy a model and have a better looking, more realistic shape.
I'm pretty sure that is Pepa Quinn's design. Except you use a 1/2 technic pin which only work with either newer or older R2s (can't remember which). I've always loved the idea.
I like the naboo fighter thing, but that third leg... it looks good, but I'm against cutting lego, I knom it is imposseble to give an R2 a third leg without cutting or gleuing lego