I've got the Promotobillet silencer insert, but I tested at 96.8 dB, only 0.8 over the limit. I did a little redneck trick to make it pass, but the trick was, well, temporary. This season the officials may test bikes after the race, so I really need a permanent solution. Anyone have, or know of, a YZF450 passing the 96dB noise test? There are several options for aftermarket silencers, but I don't want to drop $350+ unless I'm at least a little confident that it will get me to an acceptable noise level.