Any tricks to taking out the stock baffles? The top one came out pretty easy. Used the 3-7/8 hole saw and went in as far as I could. Used some vice grips to spin and pull out the baffle. Bottom one doesn’t want to come out. I can get it to spin 360 and slide forward and backwards an inch or 2 but gets stuck on a lip or the 2nd weld that gets cut.