One thing we did modify, is the most forward part of the skirt where it meets the windshield fiberglass. This is the reason we didn't make the overlap when doing the windshield fiberglass. The skirt is blind riveted to the frame, and it laid much more inboard than the metal skin there so at the time the overlap wouldn't have worked. So we completed the windshield fiberglass and then tried to determine how to make the skirt match up. What we ended up doing was drilling out i think 3 of the rivets in the most forward upright bar of the frame and putting washers as spacers in between the skirt and the frame to get it to lift out and match the windshield fiberglass. I'll have to get you guys pictures tonight to better explain.
So anyway Im very happy with our whole outcome. Everything fits very well. One thing I would recommend for someone doing this the first time is try to get your skirt to match the forward top skin sides before glassing in your windshield and then make an overlap. I talked to Steve i think it was at Vans, he said both the butt joint or an overlap are fine, their plane there has a butt joint. He said its kind of a low activity area so you dont get any wind or water in. He said the area where air will get in is in the back of the skirt because that doesn't always sit down perfectly on the aircraft skin. Here he puts foam weather stripping up under the skirt where the skirt should contact the top skin. I will probably do this there as well.