4 slice toaster (Barnard's Green WR14)

Russell hobbs 2+2 slice toaster.
Works perfectly except that the 2 slots on the left are a bit temperamental in that they don't always want to stay down but, if you hold the button, it toasts fine. Someone clever may be able to fix it?
Please say when you would like to collect. Can be left in the.porch almost any time.