For the second baffle on slash cut pipes, get a 2 foot long bar or pipe and give the second baffle a few hits. It will just break off inside. Then grab a coat hanger wire and bend a hook onto the end. pull ot the second baffle. very easy. For the third baffle I have welded a 10mmm drill bit to a 3 foot long bar and drilled 4 holes in each of the third baffles. Sounds good, not loud but very deep rumble. Love it. I am stopping there for now. Not sure what 3 baffles removed will do.
