I know they sale quiet baffles / p# 21869 for my pipes. And I know that the stock spiral baffles are what they call open baffles. But they sound like open pipes . Is there anyone out there that has welded a cap or a large washer on the end of the stock baffles ?? And maybe wrapped them with fiberglass to. Or found a set of baffles that will bring the DB level down 10 or more DBs.