So, a bought one of these when they first came out and loved it. I liked the trans from another mini and tried connecting it. it acted sluggish so I went back to the other controller. Now the thing will act fine and after a few seconds of flight pull to the front right like crazy and become impossible to trim. I know the blades are in there correct orientation cutting inward. The front right motor also chatters like crazy after it loses orientation. I would like to fix it if I can. I also don't know how to calibrate it but I think it does it on power up anyway. Any ideas on what went wrong?