Not sure what your whurring sound would be, but your kicking out of reverse is most likely from the BL addition. Mind did it too. You'll need to either clearance the center console or move it back slightly. About 1/4" is all it takes. I did it the hard way and trimmed both inside of the console along with the retainer ring around the leather boot too, then fit it all back together. Been great since.
Best of Luck,
Mike
Best of Luck,
Mike