Zipper
I received a couple of emails about your post today and you say a lifter bore off .025 does not change much, Say you degree your cam in center line method and you were able to move the lifter bore .025 and I am sure that on a roller cam you would see quite a change in degrees when you checked it again.
Like I have said there is more of a gain correcting lifter bores on a roller cam then a flat tappet cam.