is the lip on the crown race big enough?
Also are you riding with the frame bag on every time, and do you have CO2 in the frame bag?
Ok, the crown race might be the problem.
I haven’t checked it yet, but now realised that I’ve used crown race from different CK as the one I bought was missing one.
I’ll inspect that soon.
@Dogs started
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is the lip on the crown race big enough?
Also are you riding with the frame bag on every time, and do you have CO2 in the frame bag?