I don't know what punk rock album you have them listening to, Bungie, but it must be pretty good when three of the big rudeboys start treating the Bridge of Folly as a mosh pit.
My crew yesterday had no chance when what I assume was the Misfits came on for them and they started to blast us off the Bridge using boots, pure anger, and anti-establishment messages.
Can you please tone down their moshing tendencies by maybe moving them to more pop punk content and less hardcore punk so I can grind out some Notorious armour easier? May I recommend The Lillingtons?