Citras are not only "citrusy" hops - they also impart some other fruit notes as well, melon, passionfruit, pineapple, papaya, etc. It could be that the Citras are just overpowering the Amarillos and Ahtanums to produce a fruitier flavor at this point. Amarillos are also not a "punchy" citrus flavor, more mellow orange-ey than punchy grapefruit or lemon/lime.
Of the three hops you used, the Ahtanum is the one with the most definable grapefruit flavor (what we all tend to think of as the citrus-y component of most hops), but the lowest AA of the three.
So if you're looking for a citrus punch like a Sweetwater IPA or a Drifter Pale Ale, the combination you used might not be the one (I know Widmer uses a lot of Summits to get their Drifter grapefruit bombs).
There could also be a yeast component to it. Compare these two sets of notes:
YEAST STRAIN: 1272 | American Ale II™
With many of the best qualities that brewers look for when brewing American styles of beer, this strain’s performance is consistent and it makes great beer. This versatile strain is a very good choice for a “House” strain. Expect a soft, clean profile with hints of nut, and a slightly tart finish. Ferment at warmer temperatures to accentuate hop character with an increased fruitiness. Or, ferment cool for a clean, light citrus character. It attenuates well and is reliably flocculent, producing bright beer without filtration.
YEAST STRAIN: 1335 | British Ale II™
A classic British ale profile with good flocculation and malty flavor characteristics. It will finish crisp, clean and fairly dry.
The British yeast doesn't give you much help in accentuating the citrus qualities you're looking for.
It might mellow and blend a bit more in a few weeks. Only time will tell. But it sounds tasty as is! Drink it and experiment some more!