OK so I got figured out how to put my GPS coordinates into the computer and then onto a SD card and upload into the unit; heres where it gets tricky. I got about 300 waypoints went to upload and it said it uploaded 242 and not enough memory to upload all waypoints. So I pulled out the card backed up all my stuff on another card and then deleted everything off the HB unit snapshots, waypoints, tracks everything put the card inwith the 300 and it said not enough memory uploaded 242 and thats it!? I turned the unit off back on after deleting everything again. Tried again same thingbanghead so I ask I know it's supose to hold up to 3000 waypoints 998 with down and side imaging; any thoughts sugestions? At a loss here how do I find out how much memory is on the thing and whats taking it up shouldn't be anything I wiped everything off and put it on SD card.