roberjerman, you are quite a vocal skeptic here. Would you like to try Schroeder Method? I am making a presumption that you think it would not work, or that it would have a low chance of bringing about a beneficial change. I'm interested in whether you will try it, given the several instances where it is deemed highly efficacious.
If you reply with ridicule I will discontinue conversation, because I am not interested in arguing with someone who, because of their feeling of pride in being correct, believes they have the right to mock someone else.
So, yes or no, are you going to try Schroeder Method? It's not that expensive; you should be able to do it for under $200. If you have four identical ICs already, you can try it for under $100 perhaps.