Are you using threadlock on the NDS crank bolt? I had something similar with a pair of the same Rotor cranks and I think the root cause was the bolt loosening, so a liberal application of threadlock sorted it.
I haven't been using threadlock, no. I'm sure I have some knocking about so will give that a go.
Many thanks
@andyp started
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Are you using threadlock on the NDS crank bolt? I had something similar with a pair of the same Rotor cranks and I think the root cause was the bolt loosening, so a liberal application of threadlock sorted it.