It wasn't immediate, taking the BBC some time after "Porridge" concluded to discover another sitcom that could properly utilize Ronnie Barker’s abilities. Eventually, in 1976, they brought him back together with producer Sydney Lotterby and Roy Clarke, who was behind “Last of the Summer Wine,” for "Arkwright." The show features Barker as a stammering shop owner from Yorkshire whose stinginess would rival that of "Scr…