altitude issues

After I lost my first P4 , and no chance to find it (long story..), I decided to use a gps tracker all the time. I bought a new P4 and attached a TK102 tracker, set it to send sms every 30 seconds. I attached it by adhesive tape to the landing gear. On the first flight (waypoint programmed...

Dear members As I took my P4 for a flight today, I noticed that it kept climbing at a slow rate therefore and in order to maintain my footage I had to compensate by maintaining the collective stick slightly down. It was hard. Upon landing, I noticed that my home altitude was -70! Of course I did...

By way of background. I am a very serious pilot. I am a video professional and I have been flying DJI platforms for more than 3 years accident free. I am currently in pilot school, because I believe in doing it right and that knowledge is safety. Lastly I calibrated my IMU and compass early...