New a5 trigger issues

Hey guys just bought new a5. Cleaned it and now the trigger roll pin in rear just falls out. Any ideas?

Roll pins are supposed to stay in place by spring tension. But s it possible that you mixed them up?

Well I found out that browning left out the sleeve that they sit it when they go through trigger. Just took the front one out and put it in back and will have some tape across front one till I get back to shop. 2nd one today that has been this way

Now the gun will double feed. Any suggestions?