I think in the manual it is called Tilt and Depth
Basically, there is a wedge (a wedge with steps) that controls how far forward or back ward the head sits in the carriage.
If I remember correctly:
Loosen the head screws slightly and then the screw slightly that holds the wedge(just enough so that it clicks to the next posistion, push or pull the wedge (you might have wiggle the head gently to make sure it moves up against the wedge).
Basically, there is a wedge (a wedge with steps) that controls how far forward or back ward the head sits in the carriage.
If I remember correctly:
Loosen the head screws slightly and then the screw slightly that holds the wedge(just enough so that it clicks to the next posistion, push or pull the wedge (you might have wiggle the head gently to make sure it moves up against the wedge).