Started moving the knives further back in the vice, and all is well. Thanks guys!

Hi all. I just upgraded to a Wicked Edge, read all the instructions, watched a bunch of videos, read a bunch of threads, practiced on some kitchen knives, then moved on to my folders. The problem I am having is that I cannot get the curve near the tip of my knives sharp. The straight part of the blade will remove hair without touching skin, but the curved part will not shave at all, and will barely cut paper cleanly. I have tried several knives of different lengths and shapes, as well as different angles, but I keep getting the same results. Razor sharp until you get to the tip!

Sorry for the newb question, but does anyone have any suggestions? Thanks in advance!