when i plug in the battery to my bade cx2 the srvo that make the heli move forward and back automatically shhots up and when i power on the heli the heli shoots forward uncontrolably

What happened just prior to this? Did you crash? Is the heli new? Is the transmitter new? Is your transmitter on? We need more info to help.

well on a full battery i plug in the battery to the used cx2 and the servo arm just lifts up with the transmiter on. i swithed the arm out a hole to get more aggresive outdoorflight and when i try to level ot my swashplate the arm just lifts up giving it uncontrollable foward motion. a couple crashes some broken blades but nothing serious i think

Rebind to the transmitter before you try anything else. I thought I had a bad DX5E transmitter when my CX2 took off flying sideways. I concluded this because the CX2 worked fine when I rebound to its LP5DSM transmitter. I failed to then rebind to the DX5E and instead sent the DX5E off for repair. I soon got it back with a note describing how to properly bind to it. Guess it is a common error.

i avtually figured it out. thanks for the suggestions thogh!

Also during the binding process and when youconnect the batt. after you bind for future flightsmake sure the heli is still and level for five seconds. The gyro is arming and setting itself up...........