That would be me in a past incarnation. As a newbie, I twisted my throttle once while trying to start my bike and these 2 black "Rubber plug thingy's" bounced down my driveway after the big bang......
And yes, having that little bit of air available post-filter when the condoms are missing from one or both of the drain hoses can drive you slightly bonkers when trying to balance and synch your carbs.....
