I have had a leaky flex pipe for awhile now on my 89 LXi coupe. It's not that loud yet, but its annoying and makes the car sound cheap and at anytime, it could just completely go. What is the best way to fix this, Should I have a new flex pipe section welded in or replace the whole pipe assembly. Either way, things could get hairy with stuck together parts and rusty brittle pipes. I'm not sure what to have done?