I JUST INSTALLED MY USED PRO SKUNK 2 MANIFOLD ON MY SOHC EX AND WHILE I DROVE IT THE MAIN NIPPLE THAT CARRIES THE COOLANT JUST CAME OFF. WHATS THE BEST WAY TO REPAIR IT??? IT DIDNT BREAK IT JUST CAME OFF THE SOCKET.IF YOUR LOOKING AT THE MANIFOLD FROM THE BACK OF THE ENGINE ITS ON THE BOTTOM RIGHT.

PLZ HELP