blown out gasket between y pipe and cat

Swindler

I just installed a motordyne exhaust on my G but I have a lot of leaking condensation from both of the y pipe to cat flanges. I don’t know what the deal is. I already had leaking there before the exhaust change, and I thought new gaskets would fix it. It actually only leaked at one flange before, but now it’s leaking at both. I also raised the muffler up a little bit with a jack and retightened the y pipe to get some more height as recommended on a g37 motordyne thread. It was leaking before I did that, but now it’s worse. So I think I have more then one problem. Bits of the old gaskets were stuck on there when I removed the old exhaust and I did pretty good I thought scraping the old stuff off before putting on the new gasket. But maybe I didn’t do good enough? I really don’t know how I could do any better. But I am going to lower the muffler and y pipe section down lower again to see if that helps by having more of a flat mating surface. But again I had a little leaking there before I readjusted it up higher. Is it possible to take the y pipe off and see about if I missed any bits of old gasket without taking the whole exhaust off? It is such a pain I have already made adjustments twice to raise up the middle and back end and I don’t want to lose my hard work. I will maybe try Berk gaskets and some gasket maker instead of the provided motordyne gaskets. This is so discouraging for me being my first time Installing my own exhaust having to keep raising the car back up and fix the height or leaks but I keep not getting results. any advice anyone? Maybe the bolts need to be tighter? I am tightening to 30ft lbs lol


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