eagleuh1 Here in the corn belt have learned to make square drive sockets out of wore-out disc bearing inner races,they are hard anneal them weld on whatever is needed to drive it. Or torch out a square drive piece of plate weld on a driver. By chance found a tee handle driver that fits the hex ones,hard to hurt it thru that floor board hole !! Also might use 3/4 or 1 inch drive socket turned the other way to shake it loose,