I was told today that I needed a new EGR Valve and that the price would be $400 plus a gasket and labor. I read about how I could clean the valve, and so I did that today, but in the process, I snapped two of the three torx bolts. After quite a bit of work, I got it back together, but with only two bolts instead of three. After clearing the code, I seem to get a clean bill of health, but now I've got a situation where I suppose I should get a new valve! Where can I get one inexpensively?