Purchased a remanufactured injector, glow plug and fuel pump kit. Returned four injectors for improper fuel balance and leaking fuel, and now they refuse to replace two more injectors that are causing fuel knock from improper fuel atomization. Had to pay a testing and shipping fee to get back the defective injectors. And, they shipped them to the wrong address so I had to spend more time and money to get them. My truck has been broken down for seven months because of their junk injectors, and they won’t respond to any technical questions or comments.