Magento 1 restore default values to product attributes

restoreDefaultValues.php

<?php
/*
 *  Custom script to reset default value to product atributes.
 *  Author: Kimon Topouzidis
 *  Email: kimon.topouzidis@gmail.com 
 */

 //Grab the Magento instance and get the Admin store.
require_once "app/Mage.php";
Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);

set_time_limit(0);

//Hardcode for testing
// $product_id = 20667;
// $store_id = 3;

try {
    //initialize the collection with the attributes you want to default.
    $collection = Mage::getModel('catalog/product')->getCollection()
        ->addAttributeToSelect('visibility')
        ->addAttributeToSelect('status')
        ->addAttributeToSelect('instagrampro_source')
        ->addAttributeToSelect('ebizmarts_mark_visited')
        ->addAttributeToSelect('searchindex_weight')
        ->addAttributeToSelect('am_shipping_type')
        ->addAttributeToSelect('tax_class_id')
        ->addAttributeToSelect('product')
        ->addAttributeToSelect('stone_details')
        ->addAttributeToSelect('dimensions')
        ->addAttributeToSelect('details')
        ->addAttributeToSelect('country_of_manufacture')
        ->addAttributeToSelect('inventory_manage_stock')
        ->addAttributeToSelect('inventory_min_qty')
        ->addAttributeToSelect('inventory_min_sale_qty')
        ->addAttributeToSelect('inventory_max_sale_qty')
        ->addAttributeToSelect('inventory_backorders')
        ->addAttributeToSelect('inventory_notify_stock_qty')
        ->addAttributeToSelect('inventory_enable_qty_increments')
        ->addAttributeToSelect('meta_title')
        ->addAttributeToSelect('meta_keyword')
        ->addAttributeToSelect('meta_description');

    //create the transaction for performance issues.
    $transaction = Mage::getModel('core/resource_transaction');

    //loop through the collection
    foreach ($collection as $product) {
        //Could be getStores -> $stores = Mage::app()->getStores();
        //I decided to hardcode it. 
        for($i = 1; $i < 4; $i++)
        {  
        //load the product, set the data.
        $product = Mage::getModel('catalog/product')
            ->load($product->getID())
            ->setStoreId($i)
            ->setData('visibility', false)
            ->setData('status', false)
            ->setData('instagrampro_source', false)
            ->setData('ebizmarts_mark_visited', false)
            ->setData('searchindex_weight', false)
            ->setData('am_shipping_type', false)
            ->setData('tax_class_id', false)
            ->setData('product', false)
            ->setData('stone_details', false)
            ->setData('dimensions', false)
            ->setData('details', false)
            ->setData('country_of_manufacture', false)
            ->setData('inventory_manage_stock', false)
            ->setData('inventory_min_qty', false)
            ->setData('inventory_min_sale_qty', false)
            ->setData('inventory_max_sale_qty', false)
            ->setData('inventory_backorders', false)
            ->setData('inventory_notify_stock_qty', false)
            ->setData('inventory_enable_qty_increments', false)
            ->setData('meta_title', false)
            ->setData('meta_keyword', false)
            ->setData('meta_description', false);
        $transaction->addObject($product);
        }
        echo "Updating " .$product->getName(). " attributes <br>";
        $transaction->save();
    }
} catch (Exception $ex) {
    echo $ex;
}

echo 'Done';