Hot key automatic crossfade

Is there a way (I know there was in Sonar 8.5) to hot key the crossfade option?  I think it used to be the "C" or "X" key in older Sonar's.  I want to know if this exists to make my editing a lot easier.  When I'm editing and want to blend two takes on the same track, it gets annoying when they both crossfade.(sometimes I only need one of the two to crossfade)  Also, When I do crossfade, I notice that the wav's get smaller and larger in "real time" is there an option to shut that off?