And the hits keep on coming.

Pulled a couple valve springs this morning and the two I tested looked good 1.855 @ 135#. I then decided to go ahead and measure valve height and I got 1.975. I knew when I went to put the locks in they were going in easy as I usually have to wrestle with it just a bit to get the locks in. My original measurement was 1.8875 so nearly .100 of valve sink. So the good news looks like I found my problem. Can the heads be run like this or will the seats have to be recut? If I still with go with the 1.825 install height is .150 shim even a consideration or is it time to buy an aluminum head?