Both problems are usually due to an interruption in rhythm where you leave a primer loose above the strip and not inserted. Be careful not to let the press handle go past neutral and end up pushing a primer up when you don't want it up. Learning curve. Pay special attention to this when using small primers, because they are easier to get turned than large primers.
THR's GW Starr & Arfcom's GWhis is me. Wasn't smart enough to see the advantage of one signature across forums when I joined.--GWS