Went and shot 200 rounds today. Had one light primer strike due to my fiddling with the strain spring to lessen the stacking in the trigger. Trigger was not nice. It was a tactical shooting session with multiple targets, like IDPA but without all the barriers. Double action trigger pull wasn't satisfactory. I'm still waiting for S&W to answer the e-mail I sent them Wednesday. Guess I'll have to call them. I was kind of hoping that shooting it would break off or wear away whatever burr is causing this. No luck. I'll keep you posted.