I am really hoping that someone can help me, I am new to heli's and I have a Blade CX2. Since I have had it, it has been through the ringer absorbing my learning curve and as a result:

It has new eflite aluminium parts,
Bound to my DX7 Spektrum,
New extreme motors from miracle mart (I burned one of the original ones up),
Miracle mart's extreme landing gear/tail boom/body upgrades,
Miracle marts aluminium blade grips and blades (with balanced blades),
New extreme flybar that is balanced and free (no binding),
2 cell, 1320 mAh thunder power battery,
And plenty of ventilation (including the 3 in 1 casing being swiss cheesed).

To this day I can't control it, it will not hover and stay pointing in one direction. It always (from day one) wants to rotate to the left requiring right rudder input. I've made many small adjustments to the proportional trim pot but its never good enough, it always wants to rotate one way or the other.

Could I have ended up with a bad gyro? Or am I simply missing something else?

I'm pulling my hair out and contemplating sticking with airplanes, any help is most sincerely appreciated!