If you have the light gray version of the Safety Prime tool and are experiencing issues with consistently placing primers in the cup, you may need to adjust the small or large slider inside your trigger housing:
1) Open up trigger assembly by depressing a pen tip to release cover.
2) Open up cover on trigger and slide out the cover and slider.
3) Remove slider from cover and place around a 1/4" bolt. Put inside a cup of boiling water for 5 minutes.
4) Re-install slider into trigger assembly and snap on the cover.
