Do you still have the X endstop on the right (max) side of the printer as default from Folger? If you do I don't think auto leveling will work properly. Check out
[folgertech.wikia.com] for more information. You may want to update to one of the later Marlin releases.
[folgertech.wikia.com] for more information. You may want to update to one of the later Marlin releases.