Was wondering if anybody else had a problem with their lakemaster chip not locking into the sd slot correctly. Was running the lake and maps would not reload after changing the screen. Opened the slot and put it back in and out several times to get it to work. Not sure but wondering if some of the stickers on the lakemaster card with the Ser# may be causing it to not lock in properly. My memory chips works just fine in either slot but the lakemaster doesn't feel like it's locking in and my unit either will not load maps or they go in and out after changing screens or zooming in.