Making background move and loop

Hello guys,

I tried to find a solution for my problem, so these were the two I got. The first one was to create a quad, etc. I did not like it because I have a background sprite that covers the screen almost perfectly (it is a bit bigger).

What I did is to have 2 backgrounds, simple sprites that will rotate, but I get sometimes the problem of a blackline moving between the sprites. I would like to know how to fix this problem. I have tried to do it, with a code, but It worked half of the times. Sometimes the bug appeared, sometimes it didn't.

My camera does not move.

Here is my code using UnityEngine; using System.Collections;

 public class MoveBackground : MonoBehaviour {

 public float speed = 2;
 public float maxSpeed = 0.5f;
 private float speedscoreadd;
 private float getBGspeed;
 public float leftmax = 12;
 //private int spriteNum;
 public string levelDestroy;
 public Vector3 rightspawn = new Vector3(12.5f, 0f, 1f);
 private GameObject otherBG;
 private ScoreKeeper scoreKeeper;
 //public Sprite[] bgSprites;

 Vector3 backgroundPos;
 Vector3 otherBGPos;

 // Use this for initialization
 void Start () {
     scoreKeeper = GameObject.Find ("ScoreKeeper").GetComponent<ScoreKeeper>();
     if(this.name == ("Game Background 1")){
         otherBG = GameObject.Find ("Game Background 2");
         if (otherBG.name == "Game Background 2"){
             Debug.Log ("Got Background 2 successfully");
         }else{
             Debug.Log ("I did not find the Second Background");
         }
     }
     if(this.name == ("Game Background 2")){
         otherBG = GameObject.Find ("Game Background 1");
         if (otherBG.name == "Game Background 1"){
             Debug.Log ("Got Background 1 successfully");
         }else{
             Debug.Log ("I did not find the First Background");
         }
     }
 }
 // Update is called once per frame
 void FixedUpdate () {
     if (Application.loadedLevelName == (levelDestroy)){
         Destroy(this);
         Debug.Log("Destroying duplicate instance");
     }else{
         DontDestroyOnLoad(this);
     }

// speedscoreadd = scoreKeeper.score * 0.001f ; // if (speedscoreadd >= maxSpeed - speed) { // speedscoreadd = maxSpeed; // } // getBGspeed = -speed - speedscoreadd; // Debug.Log ("Speed background is:" + getBGspeed); transform.position += new Vector3( -speed - speedscoreadd,0,0); backgroundPos = this.transform.position; if (backgroundPos.x <= leftmax) { //spriteNum = Random.Range(0, 3); //this.GetComponent().sprite = bgSprites[spriteNum]; otherBGPos = new Vector3(otherBG.transform.position.x, 0, 0); if (otherBGPos.x <= 0){ Debug.Log ("Smaller"); this.transform.position = rightspawn + otherBGPos; }else if (otherBGPos.x > 0){ Debug.Log ("Bigger"); this.transform.position = rightspawn - otherBGPos; } } } }

If necessary I can send screen shots of how I made it all. I would really like some help,

Thanks in advance, Fritz