checked all the suggestions you guys gave me. After watching the whole primer operation closely, I discovered that the primer feed stop pin(14051) was not returning all the way into the housing, sometimes, and this is when I am getting my double drops . I could nudge it a little and it would go back in. Checked the primer feed stop spring(13979), even turned it around and made sure the hole and pin were clean. Still the same problem. Removed the primer slide and measured the distance from the top of the seating cup to the bottom of the slide, it measures 1.180, less than the specs call for. Removed the cup, spring and punch and found nothing broke or bent. Short of calling Dillon, any more ideas for me to try? Thanks to all who have responded. Ron