Hi Steve, don't think I would use epoxy glue, my cover was cracked by a garage that did my timing belt, they didn't tell me that they had cracked it instead they used sealing putty. But I think the heat causes expansion and contraction , so eventually it starts to leak.Before I fitted my repaired cover I placed it on the cylinder head just to make sure that the cover was sitting flat and true, also I was advised never to reuse the rubber seal, always use new.