Yeah that happened to me. I have put two kent cams in my engine and they both went. I replaced it with a standared camshaft with new followers and i have had no problems. Get a bit of wet and dry sand paper with some oil on it and give the bore where the tappet goes a little snading. not too much tho. Are you changing your camshaft? Ifyour followers are like that then the lobe will be nakered aswell.