[cotbu]

Your chain question is kind of idiotic, because....your "go bad" is insinuating that it shrunk. It can stretch but in your case its installer error.
The noise is probably the lifters. Your should bleed them. You could have spent time wondering around the interweb to help you with all problems you could ever possibly face in life, here on earth 2.0
I've participated in multiple mechanical timing threads so I know they're here! G/L