Can someone tell me whats missing on my script for resetting collected stars after completing level?

I am trying to make my collected stars reset after a level is completed. I now have it to where the score and the stars reset upon player death, However when the level is completed the star count remains upon entering next level. If anyone could help, I'd really appreciate it. `

 using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 using UnityEngine;
 
 public class LevelManager : MonoBehaviour 
 {
     public static LevelManager Instance { get; private set; }
 
     public Player Player { get; private set; }
     public CameraController Camera { get; private set; }
     public TimeSpan RunningTime { get { return DateTime.UtcNow - _started; } }
 
     public int CurrentTimeBonus
 
     {
         get
         {
             var secondDifference = (int) (BonusCutoffSeconds - RunningTime.TotalSeconds);
             return Mathf.Max (0, secondDifference) * BonusSecondMultiplier;
         }
     }
 
     private List<Checkpoint> _checkpoints;
     private int _currentCheckpointIndex;
     private DateTime _started;
     private int _savedPoints;
     private int _starsCollected;
 
     public Checkpoint DebugSpawn;
     public int BonusCutoffSeconds;
     public int BonusSecondMultiplier;
 
     public void Awake()
     {
         _savedPoints = GameManager.Instance.Points;
         _starsCollected = GameManager.Instance.Stars;
         Instance = this;
     }
 
     public void Start()
     {        
         _checkpoints = FindObjectsOfType<Checkpoint> ().OrderBy (t => t.transform.position.x).ToList ();
         _currentCheckpointIndex = _checkpoints.Count > 0 ? 0 : -1;
 
         Player = FindObjectOfType<Player> ();
         Camera = FindObjectOfType<CameraController> ();
 
         _started = DateTime.UtcNow;
 
         var listeners = FindObjectsOfType<MonoBehaviour> ().OfType<IPlayerRespawnListener> ();
         foreach (var listener in listeners) 
         {
             for (var i = _checkpoints.Count - 1; i >= 0; i --)
             {
                 var distance = ((MonoBehaviour)listener).transform.position.x - _checkpoints[i].transform.position.x;
                 if(distance < 0)
                     continue;
 
                 _checkpoints[i].AssignObjectToCheckpoint (listener);
                 break;
             }
         }
 
         #if UNITY_EDITOR
         if (DebugSpawn != null)
         DebugSpawn.SpawnPlayer (Player);
         else if (_currentCheckpointIndex != -1)
         _checkpoints [_currentCheckpointIndex].SpawnPlayer (Player);
         #else
 
         #endif
     }
 
     public void Update()
     {
         var isAtLastCheckpoint = _currentCheckpointIndex + 1 >= _checkpoints.Count;
         if (isAtLastCheckpoint)
             return;
 
         var distanceToNextCheckpoint = _checkpoints [_currentCheckpointIndex + 1].transform.position.x - Player.transform.position.x;
         if (distanceToNextCheckpoint >= 0)
             return;
 
         _checkpoints [_currentCheckpointIndex].PlayerLeftCheckpoint ();
         _currentCheckpointIndex++;
         _checkpoints [_currentCheckpointIndex].PlayerHitCheckpoint ();
 
         GameManager.Instance.AddPoints (CurrentTimeBonus);
 
         _savedPoints = GameManager.Instance.Points;
         _starsCollected = GameManager.Instance.Stars;
         _started = DateTime.UtcNow;
 
     }
 
     public void GotoNextLevel(string levelName)
     {
         StartCoroutine (GotoNextLevelCo (levelName));
     }
 
     private IEnumerator GotoNextLevelCo(string levelName)
     {
         Player.FinishLevel();
         GameManager.Instance.AddPoints(CurrentTimeBonus);
 
         FloatingText.Show ("Level Complete!", "CheckpointText", new CenteredTextPositioner (.2f));
         yield return new WaitForSeconds (1);
 
         FloatingText.Show(string.Format("{0} points!", GameManager.Instance.Points), "CheckpointText", new CenteredTextPositioner(.1f));
         yield return new WaitForSeconds(3f);
 
         if (string.IsNullOrEmpty(levelName))
             Application.LoadLevel("StartScreen");
         else
             Application.LoadLevel(levelName);
     }
 
     public void KillPlayer()
     {
         StartCoroutine (KillPLayerCo ());
     }
 
     private IEnumerator KillPLayerCo()
     {
         Player.Kill ();
         Camera.IsFollowing = false;
         yield return new WaitForSeconds (2f);
 
         Camera.IsFollowing = true;
 
         if (_currentCheckpointIndex != -1)
             _checkpoints [_currentCheckpointIndex].SpawnPlayer (Player);
 
         _started = DateTime.UtcNow;
         GameManager.Instance.ResetPoints (_savedPoints, _starsCollected);
     }
 }