I the new NFG today........just bought a used 2000 FLHTCUI and it sounds like a 88 cu in Briggs and Stratton lawnmower. I took a pick inside the stock cans and I see a baffle with an 1/8" hole in it and its about 7.5 " from the end of the can. Is this the stock configuation or did the previous owner knock out the first baffles? Thanks.