Looping gallery with custom Transition

[mindfullsilence]

I have this design:

I've come very close using a custom Transition extension. In fact, I pretty much have it working well for type: 'slide'. However, once I use type: 'loop', the slideshow breaks at the boundary of the looped slides(all slides translate almost entirely off screen when going from "last" slide -> "first" slide).

Has anyone else had experience with dealing with the translation of looped images?