1150GS - Sticky throttle

[Kaboef]

My bike's throttle is sticky.
The Afrikaans word that best describes it is "stram"

I have to really wrench the throttle to open it. It does not stick when closing, no problems there.
Its just really "hard" when I open the throttle.

I have greased the throttle guide-thingy on the bars, and forced some WD40 down the cable.

What can I try next?

Should I replace the cables?

Thanks.

 

[michnus]

 

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[Kaboef]