Hi I've had my p3s for over 2 weeks now and I couldn't be happier Until that is I ordered a ARGtek range extender kit which I successfully installed last night without any problems. I took it out and tested it today and I was very disappointed with the results, (280-300 metres started losing signal), it was poorer than the windsurfer homemade extender I had made! I thought this was a bit puzzling so I took it apart again and installed the stock antenna and wifi leads etc. I hadn't put on much hot glue so was easy to work with and I have found the connections quite secure anyway. When I tried it again after it was all back together I could not get any RC signal, keeps saying RC SIGNAL LOST. So I thought it may be the IMU. I calibrated the IMU which was successful. I then restarted all the equipment and updated the Firmware which failed and now some reason the aircraft is not right at all. Its making loud alarm like horn noises every 2 seconds and is failing to connect to the controller. Just wondered if anyone else has had similar experience?? What have I done???