The rear sight has the dis connector under it. Maybe that wasn't seated or assembled correctly. The front sight has no connection to the trigger.

2 months is a long wait. S&W did see a spike in sales of the Shields last year due to rebates and the unknown of the 2016 election. So a 1% return rate on 1 million sold is a lot of pistols ahead of you.

I do enjoy living in Atlanta and bringing my Glock to the mother ship. They do the work while I wait.