Anyone run high-flow Cats to reduce hydrocarbon exhaust smell?

14.5 is not the best mix for every situation. Might look into your tuning first: timing, carb tuning (not jets - power valve, air bleeds, etc).
Cats do lower the emissions but can also get overheated with too much fuel going into them. And, over-rich cats can smell a LOT worse...lol. Might want to possibly change cams if you can't get it better or tune it out.
For tuning help you could provide a lot more combo info.