Winchester 1300 carrier assy help needed

[Robb]

This shows an arm from the carrier assy that somehow became misaligned. It should butt up against the carrier dog (is that the correct term?) The hammer has been dropped and is forward in the pic.
The arm from the carrier slipped to the left hand side of the dog and occasionally made cycling rough and eventually would not allow the carrier to drop and jam up the gun. I had to pull the trigger group to reset it. The carrier arm should have had a bigger contact surface on it to prevent it from sliding off to the side of the dog. It's only happened once however but it made for a miserable day.