Sparkfun Electronics Simon SMD Information & Instructions page 5

For step 9, understand that alignment of the buzzer is very important.
You want to ensure the buzzer is centered and laying flat against the
board. See possible errors to the right (Page 9).
9
Reheat Start-Pad
I
Slide Into Place
II
Remove Iron
III
Page 8
Add solder to second pad.
IV
BAD BAD
To fix these potential problems, reheat the solder while moving the buzzer
into place with your tweezers.
GOOD
Page 9