Flint continued in his agency at Hubberdale even after he took over Ecton, he started a trial of the pipe downdip from the "rich work" at the site we now call Two Gin shaft between 1795 and about 1805. By this time, he was ailing and was leaving management of Ecton to his deputy, I can't remember off the top of my head when he died but it's probably given in Robey and Porter's book on the Ecton mines.
Follow the horses, Johnny my laddie, follow the horses canny lad-oh!