yep, had same problem on my small block with comp roller lifters. Tried cranes $800 roller lifter same thing. Someone told me about the Morel lifters, think it was Best Machine. Tried the Morels and no more massive oil leaks out those lifter bores. My oil leaks were out the bottom of those bores only. Lifter needed a longer skirt to keep the oil galley covered while on the nose of the cam.