Wobbling marble problem in a marble run. Looking for help

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1

When the marble is flying through the air (and on the track), it wobbles.
I have included a video as well as the .blend file. Any help?
Thanks so much!!
[0001-0300|video](upload://8gVNXh1DKkcXQzmarble test.blend (4.4 MB) GjLxt5795dYP8.mp4)