Factory style hose clamps

Yes, its the oem style corbin clamps im using. Yes, I have the correct pliers to install them and they are the right size clamps. All new hoses and new clamps. Had to shut my engine down 10 minutes into breaking in the cam. Replaced the leaking clamp and restarted. 20 minutes later another one started leaking. Then yesterday had another one leak. Drained the radiator last night and im replacing them all with regular screw clamps.