I am looking for help on getting digital CHS charts for the North Channel to load into my Raymarine es127 Multifunction Display. I checked with Raymarine Tech Support prior to purchasing the digital charts and was told the Rastor Charts will work on the es127. I insert the SD Card and nothing comes up on the display other than the generic outline of the great lakes that is in all MFD's software. No Detail, no dpeths, no buoy's, nothing. Anyone have a suggestion?