Check out this FAQ and video the on WEPS website.
http://www.wickededgeusa.com/index.php?option=com_content&view=article&id=78:can-the-wicked-edge-sharpen-fully-flat-ground-blades&catid=31:general&Itemid=46
Make sure that you are doing everything right with placing the FFG knife with the sticky tape and that the knife is centered and perfectly vertical. If you STILL have a problem, then it might be the WEPS. But always check for the easy explanation first. For me at least, that usually means I did something wrong. :silly:
Doug