Was shooting my BMR today and as the title says. The safety stopped engaging. Couldn't slide it back enough to go back on safe. Then the trigger stopped working. Wth? Took it out of the stock, sprayed cleaner & compressed air blew it out. Nothing, no change. Then with no help on my part pins and a spring fell out on the table. Think I got it back together right but it's back to the original problem. Any ideas? Something I'm missing?