Equipment Slots not completely working

I made some progress on getting my equipment slots to work, but not completely. Can't seem to figure this part out. At runtime, the (blank) item icons are active, and if I equip any item, they go inactive. Except there are 2 items that show up on ALL of the slots. See in the video: https://youtu.be/MhbSX2S9R-U

Here is my equipment slot code:

using UnityEngine; using UnityEngine.UI;

public class EquipSlot : MonoBehaviour {

 public EquipmentSlot equipmentSlot;

 EquipUI UI;

 public Equipment equipment;

 public Image icon;
 public Button removeButton;

 Item item;
 
 public bool isEquipped;

 public void Start()
 {
     EquipmentManager.instance.onEquipmentChanged += OnEquipmentChanged;
 }
 
 public void EquipItem(Equipment equipment)
 {
     item = equipment;

         icon.sprite = item.icon;
         icon.enabled = true;
         this.equipment = equipment; //reference to equipped item
         removeButton.interactable = true;
 }

 public void ClearSlot()
 {
     item = null;

     icon.sprite = null;
     icon.enabled = false;
     removeButton.interactable = false;

 }

 public void OnRemoveButton()
 {
     //Remove from equipment slot
 }

public void OnEquipmentChanged(Equipment newItem, Equipment oldItem) { if (newItem != null) { item = equipment;

         icon.sprite = newItem.icon;
         icon.enabled = true;
         removeButton.interactable = true;
         //this.equipment = equipment;
     }

     if (oldItem != null)
     {
         item = null;
         
         icon.sprite = null;
         icon.enabled = false;
         removeButton.interactable = false;
     }
 }   

}

Equipment Manager:

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class EquipmentManager : MonoBehaviour {

 #region Singleton
 public static EquipmentManager instance;

 private void Awake()
 {
     instance = this;
 }
 #endregion

 public List<Equipment> items = new List<Equipment>();
 
 public Equipment[] defaultItems;
 public SkinnedMeshRenderer targetMesh;
 public Equipment[] currentEquipment; //Items we currently have equipped
 SkinnedMeshRenderer[] currentMeshes;

 //Callback for when an item is equipped/unequipped
 public delegate void OnEquipmentChanged(Equipment newItem, Equipment oldItem);
 public OnEquipmentChanged onEquipmentChanged;

 Inventory inventory; //Ref to inventory

 private void Start()
 {
     inventory = Inventory.instance; //Get ref to inventory

     //Initialize currentEquipment based on number of equipment slots
     int numSlots = System.Enum.GetNames(typeof(EquipmentSlot)).Length;
     currentEquipment = new Equipment[numSlots];
     currentMeshes = new SkinnedMeshRenderer[numSlots];

     EquipDefaultItems();
 }

 //Equip a new item
 public void Equip (Equipment newItem)
 {
     //Find out what slot the item fits in
     int slotIndex = (int)newItem.equipSlot;
     Equipment oldItem = Unequip(slotIndex);

     //An item has been equipped so we trigger the callback
     if(onEquipmentChanged != null)
     {
         onEquipmentChanged.Invoke(newItem, oldItem);
     }
     
     //Insert the item into the slot
     currentEquipment[slotIndex] = newItem;
     SkinnedMeshRenderer newMesh = Instantiate<SkinnedMeshRenderer>(newItem.mesh);
     newMesh.transform.parent = targetMesh.transform;

     newMesh.bones = targetMesh.bones;
     newMesh.rootBone = targetMesh.rootBone;
     currentMeshes[slotIndex] = newMesh;
 }

 //Unequip an item with a particular index
 public Equipment Unequip (int slotIndex)
 {
     //Only do this if an item is there
     if (currentEquipment [slotIndex] != null)
     {
         if(currentMeshes[slotIndex] != null)
         {
             Destroy(currentMeshes[slotIndex].gameObject);
         }
         //Add the item to the inventory
         Equipment oldItem = currentEquipment[slotIndex];
         inventory.Add(oldItem);

         //Remove the item from the equipment array
         currentEquipment[slotIndex] = null;

         //Equipment has been removed to we trigger the callback
         if (onEquipmentChanged != null)
         {
             onEquipmentChanged.Invoke(null, oldItem);
         }
         return oldItem;
     }
     return null;
 }

 public void UnequipAll()
 {
     for (int i = 0; i < currentEquipment.Length; i++)
     {
         Unequip(i);
     }
     EquipDefaultItems();
 }

 void EquipDefaultItems()
 {
     foreach(Equipment item in defaultItems)
     {
         Equip(item);
     }
 }

 void Update()
 {
     if (Input.GetKeyDown(KeyCode.U))
         UnequipAll();
 }

}

EquipUI:

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class EquipUI : MonoBehaviour {

 public Transform EquipSlots;
 
 Inventory inventory;
 EquipmentManager manager;

 public EquipSlot slot;
 
 EquipSlot[] eSlots;
 
 // Use this for initialization
 void Start () {
     manager = EquipmentManager.instance;
     //manager.onEquipmentChanged += UpdateUI;

     eSlots = EquipSlots.GetComponentsInChildren<EquipSlot>();
    
 }
 
 // Update is called once per frame
 void Update () {
     
 }

 void UpdateUI()
 {      
     
     for (int i = 0; i < eSlots.Length; i++)
     {
         if(i < manager.items.Count)
         {
             eSlots[i].EquipItem(manager.items[i]);
         } else
         {
             eSlots[i].ClearSlot();
         } 
     }
 }

}