13. Install the opamps U1 and U2 into the sockets
Now, plug the opamp ICs into their sockets. You may need to gently bend the leads together
so they are parallel to fit the socket:
Then press them into the sockets. Make sure you align pin 1 with the notch on the sockets,
and the notch on the PCB silkscreen! Be careful that the leads don't get bent! If they do, pull
the IC out of the socket and straighten the leads, and try again.
They should look like this - double-check the orientation to match the photo:
