Blender to Unreal Tools, Part 1 - February 6 - Live from HQ

Hello
I’m using the Unreal to blender and ue2rigify for exporting my custom character from blender to ue4
It was hard but I some how managed to overcome the initial tchnical issues.
There is an issue I have and that is I rigged my character with rigify and animated in blender.
Everything is fine in blender BUT after exporting to UE4 the weapon (which is attached to the right hand and left hand is parented to it as well) overlaps with the left hand. In other word the offset (rotation and location related to the hands) is not a constant value and this is troublemaking.
It is so important for me and I’m here after at least 2 months of working researching watching tuts and etc.
please help me with any thing.

Thank you.