Please; I understood where you are coming from in the post and appreciate it. I saw nothing to indicate anything but a helpfull tone. And as I said you are right on the money regarding that advice. In fact I believe I might have indicated I had a used trans I was considering so your point is well taken. So; I must forget the effect DSR has on the filter and concentrate on measuring what I have and computing what I can do with that? Is that a good way to put it? Yes it is hot here too; 99 deg. We had a brownout last night and I had to spend a few hours in the bar with the wife and AC. I don't normally do that during the week much; but I should.