FYI: New software 2.10 http://wiki.mikrokopter.de/en/Firmware-2.10 Most Important Change: ACC-Calibration Note: the 'normal' (old) ACC-Calibration is still Stick -> upper right corner. But now the stick must be pressed minimum 5 seconds. My Note>This will prevent you from accidentally calibrating your MK. If you have flown MK awhile then you have prob done this, I know I have more than once. You can also have your MK Copter come home rear first. Yaw direction for ComingHome You can choose if the MK should turn automatically while using ComingHome My Q: Just built a new Octo HL: I have an MX-20, center throttle set at 127, with Altitude Control Enabled (Vario) but when I Arm the motors the Octo wants to take off very fast. The only way to control it is to enable Alt control or hold the Throttle down a bit. I must be missing something? I've been flying a CS6 for a few years, so I'm very familiar with MKTools.