Bought a new Lowrance downscan unit with gps. Bought Navionics premium maps. This unit uses the micro sd card. My question is how do you get the card out of the slot! I ended up using the point of my pocket knife to get the card out. I know on the HDS units you just pull the card out on my unit you cannot get a hold of the card. Got to be a trick I don't know about or Lowrance doesn't want you to take the card out!! Anybody else had this problem?