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@gfk_velo
There are only three types of nipple used in the Bora - very old ones use an upside-down type nipple, fitted internally. I'd be moderately surprised if you have one of these as they were discontinued sometime in the very early 2000s IIRC.
More recently Bora has used an internal, pillar type nipple, 5.5 mm across the flats with a nylock insert - which has a load-spreading plate under it (you need to be very careful that this plate is there and correctly oriented) ...
The most recent (2015->) Bora uses an external nipple so it's readily identified.
We have the pillar type and the new type (external) nipples, not the old upside-down type and I'd have thought Condor would be in the same position.
If Condor really can't help, please email us: velotechcycling"at"aim"dot"com
and we can sort you out - we are not fundamentally a retail business though so it's be much better to work through Condor if you can.