Spline mesh component Lighting Problem

Hello, I have build a spline tool to help me build my level, so far i’ve been trying to fix the lighting issue. I’ve keep on building the lighting and adjusting the spline point’s rotation. nothing is fixing it.

294141-splinetool.png

I’m relatively new to unreal engine and I’ve been experiment on stuff and I’ve encountered this problem. Is there anyway i could get the mesh to receive correct lighting regardless of the rotation of the spline points?

What is your spline mesh mobility?