polo mk4 wheel alignment

[billy g]

Hi all, can anyone tell me the parts of the steering and suspension that get adjusted if needed for correct wheel alignment, I recently replaced a front left coil spring and strut bearing and track rod end ( I put track rod end back to where it practically was) and had the lower ball joint apart also, all on left side, car feels like its drifting from left to right of its own accord, dosnt feel right. what parts affect the alignment of the car. thanks in advance.