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This is the first version of the article, so everything below was added.
A steady pull to one side has a short list of usual causes. Work through them in order:
**1. Steering trim.** Hold the car off the ground, leave the sticks centered, and adjust the trim until the front wheels point dead straight. This fixes most pulls in seconds.
**2. Binding or drag.** Spin each front wheel by hand — they should coast freely and equally. A dragging brake, a tight or dirty bearing, or debris in the driveline on one side will pull the car that way.
**3. Servo saver / linkage.** A servo saver that is too loose will slip under load and let the wheels wander. Check it isn't slipping and that the steering links aren't bent.
**4. Tweak.** If the chassis sits with unequal corner weight (a 'tweak'), it will launch to one side. Set equal ride height left-to-right and check the shocks are matched.
**5. Alignment.** Uneven toe or a bent hub/arm from a crash will steer the car on its own. Compare left and right and replace anything bent.