just wondering if any one knew if it was ok to just change the crystals in the transmitter and reciever instead of changing everything?

it wont hurt anything just put the same ones in the receiver and transmitter

i more question have you ever had the wires pop out of your reciever and how can i stop it?

No you must not have them pushed in all the way.That aint good if they pop out while your running it you might have a runaway.

i was wondering if anyone could tell me why my car pulls to the right i tried adjusting the trim and it didnt help also it only does it when im driving at almost full throttle?

did you lift the wheels off the ground when you set the trim

ya i lifted it i think it was my servo i swapped it out with a spare i had and it seems to be ok...could you tell me why my servo would do that?

check the wheel alignment, you may need to adjust the front turnbuckles, check the rear alignment too. sometimes when you accelerate quickly you get torque steer, you can try to correct this by adjusting the alignment, also make sure there is no binding in the wheels, dogbones etc.