I need to check my math

Ten gallons of Pale were brewed in the basement brewery last night. I missed the target gravity by about fifty miles. I'll need to re-check my math and see if I missed somewhere in the calculations. Here are a few other places where I may not have paid close enough attention.

1. The Profile. I am still tweaking the grain bill to match the efficiency of the new mill.
2. The Grist. I am going to need to really get this dialed. Last time I brewed, I ran the malt thru twice, and nailed the gravity. This time I only ran it thru once.
   
3. The Lauter. I was busy eating dinner, and chatting with my In-laws, and not really paying that close attention to it. I may need to DIY a sparge arm or something to mechanize it a bit to increase efficiency.

My target gravity was 1.054, actual gravity was 1.040. I'd probably get fired in a commercial brewery for missing the mark by .014. Screw that, I'm not doing the math to see how badly I screwed up. Back to the drawing board. If this ferments out quickly enough, I'm making more beer this weekend.