Pro Tip: when you use a hammer don't miss & smash your index finger like me. I hit it so fucking hard I was hesitant to take my glove off & look. Now when the temp gets under about 50 degrees I can't do anything outside without gloves because my left index finger turns a death-like grey color & stops working.
I asked my doc about it, he said "oh yeah, you probably just crushed the artery in it. It won't get better. As a matter of fact as you get older it might get worse, if it does we'll have to take it off" .
yikes. Yeah I put the sockets in place and have my other hand no where near the yoke before I swing the hammer.