This 121 Brookfield just defies everything QC was created to stop from getting out the door. The insulator was completely useless from day # 1 because the pinhole is 1/3rd closed off with a massive bubble created when a rock in the skirt blew out, the mould contained the bubble on the outside but the bubble bulged out into the pinhole without bursting, but the walls of the bubble are stuccoed with small rock bits. The insulator has obviously seen the outdoors as it has the classic markings of etching from minerals in the ground.