Is it possible that is why only the one baffle remains in his motor Cotton? I asked this same question many times in the past, should I weld new baffles in and re machine to old specs or alter them to my own conclusion as to what is or isn't right. Seems to be many rights and wrongs on this topic, and although I have had a lot apart both ways I still can't come up with a comfortable explanation as to how to fix it right. I do know many, many years ago I was told at Hop's Island Cycles, used to be on Anna Marie Island in FL. Everything I knew about Harleys had absolutely nothing to do with an Indian. They still seem to be the same old same old to me though.
The downside of repairing broken baffles is that weld distorions can lead to the cylinder decks requiring to be flattened, and just the grief of pulling and re-installing the studs is enough reason to avoid it if you can.