VariableWidth: slider width issue

[Tini79]

Is it possible to change the way the slides appear after I slide them? So I would like to make the slide sliding to the edge in a whole size of width instead of-like in this picture-the slide only sliding some part of it, not the whole. I hope you understand what I am trying to say here.

[Tini79]

As I capture on image, the next slide on the right corner seems like this, besides on the left corner, my image looks like being cropped a lil bit on the left side. I guess, this is because my image sliding to the left more than the previous width