I don't know if anyone can help me out, but I have a problem with my Revo. I set up everything using a mini ublox neo-6m and I calibrated all of the sensors minus the temp. If I use the Basic algorithm everything is stable, but when I switch it to the INS13 algorithm, the quad starts going crazy. Even when placed on a flat surface the GCS is showing that the quad is pitching up and down / rolling left and right slightly. I want to be able to use the GPS flight modes. What should I do?