I assume that I am doing something very wrong on the takeoff, I haven't flown this bird in a very long time. The only thing I can come up with is that I am either pressing something that I shouldn't prior to takeoff, or possibly a CG issue. Basically what it does is I get a warning sound and it goes to 45 degree angle, the VS goes to +2100. It also decides not to fly straight and does wacky turns, and at some points even goes upside down. So my question is what am I possibly doing wrong that would cause this?