LevelGenerator after Checkpoint Respawn Not Aligning Tiles Properly

Pretty new at this, so apologies if I'm missing an easy bit of logic. Basically, I have a Crossy Roads style LevelGenerator that is called by the Manager at Start() and to build 30 tiles, then the LevelGenerator creates a tile everytime the player jumps forward. I have two different scales of tiles; some tiles are 2 units on the z, some are one unit. Works great until you respawn at a Checkpoint. When you respawn, I reset the levelgenerator's Vector3 to match the player, then recently the nearest fix I have done is pass in this line:

         levelGenerator.lastPos = Checkpoint.reachedPoint.z + 46.5f;

The 46.5 offset seems to work sometimes and sometimes not. I believe it is because, as I mentioned, some tiles are scaled 2 z, so randomly 30 levels could be at most 60 tiles and at least 30 tiles. Here's my code for the LevelGenerator:

 public class LevelGenerator : MonoBehaviour 
 {
     public List<GameObject> platform = new List<GameObject> ();
     public List<float> height = new List<float> ();
 
 
     private int rndRange = 0;
     public float lastPos = 0;
     private float lastScale = 0;
     public bool isVisible = false;
 
     public void RandomGenerator ()
     {
         rndRange = Random.Range ( 0, platform.Count );
         for ( int i = 0; i < platform.Count; i++ )
         {
             CreateLevelObject ( platform [i], height [i], i );
         }
     }
 
     public void CreateLevelObject ( GameObject obj, float height, int value )
     {
         //how we set the pieces in.
 
             if ( rndRange == value )
             {
             GameObject go = Instantiate ( obj ) as GameObject;
             float offset = lastPos + ( lastScale * 0.5f );
             offset += (go.transform.localScale.z ) * 0.5f;
             Vector3 pos = new Vector3 ( 0, height, offset );
             go.transform.position = pos;
             lastPos = go.transform.position.z;
             lastScale = go.transform.localScale.z;
             go.transform.parent = this.transform;
             }
     }
 }

Basically, I think the difference of the 1 and 2 on the lastScale is causing the issue. Is there any simple way that I could have the manager check for the number of tiles the LevelGenerator is returning on Start() or perhaps force it?