OP, in order to make sure your forward pressure is set right the screw on the base of the heel piece (the black part) on your griffons should sit flush in its housing when the heel piece is engaged. Below is a picture with said screw circled and flush, so you know what it should look like.
If you are at all confused about this or how to do it take it to a shop tech and let them do it for you. If you ask, I'm sure they would even show you how to and take you through the process.