Recently put the hook reveal series on my boat , I have a navionics east card that I’ve used in all my graphs , and they all snapped in place when you insert them in the card slot.  Does anyone know if they have changed the card sizes , it’s a micro sd card and the manual says the graph takes the micro sd , but it doesn’t seem to work in this graph. It fits in but doesn’t snap in place. Any help would be appreciated 

And I forgot to mention my 9 inch hook reveal it takes the card and snaps in place just the 7inch graph that doesn’t