Hey guys, I purchased replica mufflers from MikesXS for my '72 XS650. They look great and seem to work fine. However, I'd like to open them up a bit. I could use a little roar (not too much) in my life. Has anyone done anything to modify the baffles on these mufflers? If so, what did you do and how did it come out. Thanks, Sean PS pic attached of the bike hibernating in my basement.