Leading edges went together quickly and without problems.  The only hard part was getting the ribs in and the cleoco's in the very nose.  Left leading edge I started at the rear and worked my way to the front.  I had to fight to get every cleoco in, and it took 2+ hours to get it assembled for match drilling.  The right one I got the formost 3 clecos in on the topskin in the very nose, and then turned it over and got the first 2 cleco's in the bottom skin.  This was much easier (I did this on the workbench, and not in the jig.  I then put it in the jig and the other clecos went in quickly and easily.  Less than 1  hr to get it assmebled.  Other change I did was to backrivet the J-stiffener in before inserting the ribs.  It was easy still to put the ribs in with the stiffener already riveted in, and saved a little time with the riveting.