I've recently been having problems uploading long rides to Motion Base. I did the Mohican 100 last month and ever since I haven't been able to upload any ride longer than 4 hours +or-. I get an error message stating the file is too large. I'm using the Smart Recording setting, and I've been able to up load larger files in the past. I've since deleted the record of Mohocan though this past week I did some 3 back to back centuries and once again I can't upload them to Motion. Ascent accepted them with no problems. The unit was replaced by Garmin in mid April and I'm wondering if it's a Motion Based issue or a Garmin refurb bug.