Banner Rotation Issues

[high-spite]

Hi all,

I am trying to recreate the attached reference of the banner/ribbon but have run into an issue that I could use some advice for please

I can get so far with the shape but cant seem to control the right hand side in terms of matching the lefts rotation of the geometry. The yellow highlights what i'm after for the right

This is the setup. I'm using a plane with a spline wrap

I've also attached the c4d file so anyone who has a solution can see the setup. banner.c4d

Thought this would be simple and it probably is but I'm a bit stumped. Any advice or help on this appreciated. Thanks