EASY C PRO help tank drive issues!!! can any 1 solve this programming issue?

[mayazk]

guys im confused on easy c pro how do you program tank drive i am having some trouble!!

Now im guessing that the following is the programming for tank drive

While 1==1

Tank 4 drive

Port 2 Port 1
Axis 2 Axis 2

pwm value

left frnt motor . right frnt motor
1 . 2

left rear motor . right rear motor
3 . 4

this seems right to me tell me if there is any reason for one entire side to not work!!
and the other is having problems too when the jstik is pulled back the gears are making a funny noise
but when directly hooked to the battery it works perfectly although both sides rotate fast in opp directions