RE: Drop away and Blazer issues...
Try moving your nock point and launcher up about 1/8". This may put your arrow a little above the center of the berger button, but it will have no effect on performance. What it will do is allow you to set your rest up to raise higher during the draw, thus giving you more clearance when it drops on the shot.
Many.....many....bows need to be set up this way. The center of the berger button is not a hard fast standard.