Having some issues with the armature once in-engine

So it seems that the IK system is massive, for one. Secondly, the animation sorta repeats in-position. I assume this has something to do with the IK chain. Finally, my asset seems to float with these animations. Any remedies?

The reference I’m using.

2f1cebb837.jpg What mine looks like.

Is there a way to assign IK in UE4? I apologise if this question has been asked a whole lot. I tried to search but couldnt find anything on it.

I’m exporting FBX 2013 from MODO 901 to UE4, using the armature of the UE4 default skeleton as my own.

Thanks for any suggestions.