It may just be too small for a steel steerer as the ID of carbon steerers is different to steel.
Reckon it'll be this as I have a Columbus bung that bottoms out on itself before tightening into a steel steerer.
Sounds like it may be possible!
@Edavies94 started
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Reckon it'll be this as I have a Columbus bung that bottoms out on itself before tightening into a steel steerer.