Gap in between Cut/Fill Slope End Conditions

I need of some assistance from the Bentley hive.

I have an issue where when my cut slope ends and the fill slope takes effect, a gap is left in my corridor end condition before my fill slope takes over. The inverse (opposite is also happening- transitioning from fill to cut slope). 

1) How do I close this gap up to have a seamless corridor?

2) How do I create a seamless Design Top Mesh and bottom mesh with these transitioning cut/fill slope end conditions?