Hi, I can't get the dual extrusion merge feature to work. I started from a solid model in SW, cut half of it off and saved it as 1.STL. Then I cut the opposite half from the exact same SW file, and saved it as 2.STL. When I import them and select 'dual extrusion merge', the two models merge in the wrong orientation. I've tried it with a few different models, and there doesn't seem to be a consistent offset, it seems random. Any help would be greatly appreciated. Thanks!