Good sharpener. Works well. For the equal adge angles try to change the lenght of the clamp base screws. Do not force! Work with passion and it will work perfect.
There isn't any instruction so you have to depend on the video and commonsense to assemble the whole setup. Not an impossible task but will take a bit of time and trial and error. Be careful when setting the knife angle which you need to include the gripper angle(tilting downward). Overall if setup properly you will always get a sharpen knife easily. Overall a good buy if you are struggling with sharpening stone in the past.