Step 10

Insert the eight Orange LEDs making sure that you have the longer lead toward the bottom of the board.  There is also a flat indentation on one side of the LED which should be pointing up.  Make sure that the LED is completely flat on the board.  Turn the board over and solder one lead of each LED.  Turn the board and carefully inspect the LEDs to make sure that they are all still flat on the board and facing straight ahead.  It often helps to put your finger on the LED and push it against the board while soldering to ensure it is straight.  Once you are happy that it is right, solder the other pins and then trim.

 It is definitely worth double checking to ensure that the LED is in the proper orientation and is in the right spot flat on the board.

Step 9

 Insert the eight PN2907 Transistors.  Spread the legs apart and insert it so that the flat side is facing down to give the appearance of a bell when looking at the top.  Put it in the board so that the distance from the bottom of the transistor to the board is about half the height of the transistor case.  You want them to be the same height as the PN2222 transistors which you put in last step.  Be careful not to push it all the way to the board as you might break the legs.  Turn the board over and tack solder one leg on each transistor, check to make sure that they all look straight and then solder the other legs and then trim