LMFAO. Is this guy serious?? I have NEVER had a freeze plug leak on a rebuild. Even on salt water marine motors. Sounds like a real [Edited by Moparts - Family Friendly Site - Keep it clean]. Pull out the leaking plug and clean the sealing surface with emory cloth. Get a new brass plug and use some sealer and put it back in. Problem should be solved. And oh yea, find a different machine shop for your next rebuild !!!!