You certainly don't want the trim outside once the door is shut. I personally feel the best effect is achieved by having the seal go about a third of the way under the flexible vinyl seal so it makes a nice tight seal with the slab, the ramp edge and flexible seal all coming together. As long as you are into that garage door bottom seal less then halfway, you are good to go.
that helps tremendously...if I do it that way I may escape having to cut tile on the opposite wall
