Got any pics or sound clips?! :p
1. Dont have the CTA, not sure what I'd do about the gap. Try getting an SVT fender boot and modifying it to fit the filter.
2. Yes, it helps. With the resonators in the fender it directs air into a plenum for a certain sound but without that stuff air can freely flow up to the fender hole.
3. Heat Shield from John Miks...Have him make one for the Zetec KKM and then modify it once you get it to fit around the CTA....with its close proximity to the fender at least two of the panels on the shield will need to be shortened.
