Tonight I stopped by Home Depot to buy a saw that I could use to finish cutting the lead counterweight. It was by far the most difficult task to date. 2 hours of cutting and filing. 

Once that was done, I refitted it to the elevator. I then put silicon caulk at the trailing edge of the stiffeners, and then clecoed the skin onto the skeleton. 

  
I then riveted the skin on and fitted the fiberglass tip just for fun. 

  
One down and one to go!