I have a liftmaster 8500 garage door opener that I have been unable to set up with homelink. No issues with my wife's rear view mirror mounted homelink on her ICE. My X will receive the signal and acknowledges by flashing the headlights, but then doesn't open the door after I finish programming. I am in Canada, so not sure if there is any difference in programming steps that have to be followed. Does anyone have any tips or tricks I can try?