UCX stretched to infinity

Title says it all. In 3dsmax the two objects are exactly on top of each other. Import to UE4 and uncheck box for autogen collision. Import and Import All present the issue.

289801-collision-import.png

File: StairCase.fbx
Object Names: StairCase, UCX_StairCase

i’ve tried naming the collision object with a suffix of _001 and _01 and still no improvement on the situation. Does anyone have a solution? I feel like I’m just missing something simple.