r2 trigger doesn't work after reassembling.

Nothing is broken or scratched but r2 button sometimes is wirking like if was pressed sll the time and others just is not responding

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0