A good starting point for setting your amperage for stick welding is the amperage setting should be roughly the same as the decimal equivalent of the diameter of the rod.
ie 3/32-90 amps 1/8-125 amps 5/32-155amps. This works for 7018 and most rods. 6011 runs at a little lower amperage. you might have to go colder(lower amps) for thinner materials or hotter for thicker materials.