The standing spigot in my barn has a very slow dripping leak that is freezing at night and preventing me from pulling the handle up to turn the water on in the morning without first thawing it out. A plumber came out a few years ago when this was happening, and in just a few seconds pulled up on the handle and made an adjustment under there, which I did not see. It stopped the leak, and he charged me $75.00. I have already tried tightening the "nut" on the pipe that shows when you pull up the handle, but it still leaks. There is another little screw up closer to the handle as well that looks somewhat like a "set screw." Could that be what needs adjusting? Or do the whole guts of the spigot need to be replaced?