If the bolt wasn't going to complete battery, wouldn't that result in a light strike?
Make sure your hammer pin hasn't walked out of the receiver. That seems to be a recurrent theme on the forum.
You will find S&W no help on this one. I lost a spring and a detent and couldn't get a part number or diagram or anything from them. Their solution was to send it to them, they would replace the parts that were needed and send it back.
My solution: Take to local GS and let them replace it. Way easier.