300s are like that, just some extra vibes over the 250s. Viton orings and some tubing on the springs really help noise from the spigot area. If your pipe is even barely tweaked, and I mean barely, pipe/spigot fit is compromised and orings get worn fast on one side, causing the pipe flange to make contact with the spigot directly and make noise. Head stays disappeared in '12 with the new stiffer frame, same head casting used.