remapping nav buttons

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http://forum.xda-developers.com – So I'm on the infamous GE 4.2.2 ROM with the ktoon kernel. My question is is there a way to remap the navigation buttons? I don't like the home button lag. Is there a way to map multitask command to a "hold menu" and the Google now to "hold back" soft button? Couldn't find anything on this when I searched (HowTos)