For this you'll have to locate another screw that controls the stop, and replace it just like you did with the screw for the draw length.
Note that you have to do it for both cams! Besides changing the draw length, you have to change the draw stop too depending on the model.
Once you located the screw, you have to unscrew it from it's current location, and screw it back to a new, letter-encoded position, to get the draw length you desire. Moving up to the next letter usually shortens the draw length by 1/2". The draw lengths are coded as letters, starting with the letter "A" for the longest draw length. One thing is common in most of them: you have to locate the screw(s) on the cams that adjust the draw length. PSE Compound Bows come with many different cam designs.