Began assembly of the horizontal stab. Clekod the front and rear spars and prepared them for riveting. Installed the HS-707 rib in the left HS skin. That was my first attempt and bucking rivets by myself. I was pretty slow and methodical, but it turned out perfect. I'm done setting -4 rivets with my hand squeezer. I got about five done on the spars before I gave up...I'll be borrowing a pneumatic squeezer tommorow...and hopefully get one for Christmas....