When it took off it Immediately started to lean to left... obviously i had elevator up and compensated with right aileron... when it continued (at about 15' high) to roll over i then gave it right rudder w/ right aileron ... but nothing responded. As it inverted it was diving and i admit that i didn't give it down elevator but at that point it was maybe a second from heading almost straight down and i don't think it could have pulled out anyway even though it has a semi-symetrical wing.
Sounds like maybe you didn't let off on the "up" elevator as it rolled over which definitely would put it nose down as it inverted. It's possible in this situation that your aileron and rudder inputs
were responding but there was simply not enough time to notice as it's obvious that you didn't have sufficient altitude for the plane to right itself. At low altitude, if the wing is level, (upright
or inverted), use elevator to get the nose up. Once you gain some altitude, then right the plane.