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Conducted EMC problem is common mode problem is due to common mode emissions?

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Our 30W, Offline, Power factor corrected LED driver has failed Conducted EMC in the Live connection. (it does NOT use any Switch Mode Power supplies, just controlled linear current regulators.)
It has actually passed conducted EMC in the Neutral connection.
(the EMC scans are attached.)
We take it that this means that the problem is a common mode conducted problem, and that we need a common mode choke?
The strange thing is that we have a similar product that operates at 150W. –Its Live and Neutral conducted EMC plots are the same.


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