Did you use a sharpie to make sure you were hitting the edge on both sides…before you pulled a burr on the one side.
There is only one reason that you can create a burr on one side and not take it off on the other. The stone on one side is not getting to the edge. It is intuitive, if you grind long enough, you will reach the apex. If there is still a burr on the side that you are grinding, you have not reached the apex.
If you do not remove that burr eventually, you cannot get the knife sharp!
Two choices really. One is to increase the angle on the side with the burr remaining to remove it. Many cheap knives are not ground symmetrically. If you want to keep it that way (not sure why you would) you will have to grind at different angles on each side.
Second, set your angles the way you want them and continue grinding until you have established a burr once on each side, then sharpen from there. If you keep at it, you will remove that burr, it just will take some time and patience to get there.
One other thing to think about, it has been documented that when you have a knife that is thicker than the calibration thickness for the WEPS, you may have to change the angle on the side with the moveable jaw somewhat to get even bevels. Do you have an angle cube? If not, I would highly recommend that you get one and use it.
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