I guess the problem is my mesh pivot. When i change the mesh pivot it seem to be ok.
But as you can see i have the array rotation for each point spline and i think the function Get Rotation at Distance Along Spline can’t get the rotation at the point spline and rotate the mesh to exactly rotation in the array.
Sorry for the long explaination and correct me if i am wrong cause i just new to ue.
Really appreciate if you help me with this!