That just sucks. I feel your pain. Hopefully no damage when you open her up. I have a set of roller lifters that I got with a cam I bought used. I ran them for a short time but pulled the whole setup because it sounded like a sewing machine. It was a custom ground cam and the lobes were cut steep on the backside so they closed really fast. I figure that's why the last guy pulled them too. Anyway I thought I might drop them on a new cam if I decided to buy one. Wish I knew what brand they were. Think I'll just stick with flat tappets and oil supplements. Pretty easy. And pretty cheap.