Hi folks, some background...I did my first flight indoors at my office (with the propeller guards on) a few weeks back and all was really good. Launched off a conference table and flew all over the office. A week later I successfully flew my first outdoor flights (without propeller guard of course) at my desert house. Flew quite a bit and really enjoyed it. This past weekend back home took her over to a buddies house to show his son and flew indoors (again with the guards back on). Disaster. Mini takes off and immediately upon leaving the floor veers off in whatever direction like it has a mind of its own. Never launched straight up the 1.2 meters it is supposed to do. Also couldn't or wouldn't hold altitude. She would continually try to land as I fought to keep her in the air while drifting all over the place. Completely erratic flight. Any ideas? Now I did do both compass and IMU calibrations at my desert house which is 150 miles from home. I did not do them back at home but I think its not necessary for just doing indoor flight? One other thing I thought about was the floor was maybe too dark for the sensors so I tried her again later the same day at my home over a white bedspread. Same erratic results. I'm really stumped. Any insights are appreciated. Thank you.