Terry:
Concerning the 3909/3910 not being listed for the CVO's yet.......is the "football" cover made differently on the CVO's vs. the standard Big Twins?
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WV....yes, I believe it is, though I am not 100% certain about this. In order to get the regular round K&N to fit decently, the thick gasket is required between the cover and the filter. Not because of the seal, as the filter fits the baseplate just fine (the SE chrome baseplate), but the cover is made in such a way that there is a gap where the top of the filter meets the CVO football shaped cover on the Ultras. The thick gasket helps fill those voids.
Although I did not actually fit the filter of the 3910 kit inside the cover, it appeared that it would work. I wish now that I had looked into it a little deeper.