I just had my Viper alarm system installed by an authorized Viper dealer. No issues with the remote start but when I arm the vehicle with the windows down and reach in and unlock the rear doors to open them the alarm doesn't go off until I close and then open the doors one more time. Is this normal? If I open the hatch glass the alarm goes off right away. Is there some type of delay I am not aware of? I am using the XK-01 which I was told provides for rear door sense.