Recently trying to remove injector #1 using a threaded puller I cracked the aluminum around the passenger side of the injector. Nothing is seeping out as of yet, but I haven't gotten the injector out either and havent tried starting the motor. Is there water or oil pathways under that side if the shell? Is this something I can leave alone, should I JB Weld it, or is it much worse? Any insight someone can offer is much appreciated.