A while back, I rode my Valk a few miles to meet friends at a gas station pre ride. After I parked, a rat jumped out from my bike and scurried across the parking lot. I was certain I would see a rats nest on the air cleaner of my B.
Fortunately, the camera showed my clean and practically new looking air filter. Thanks all for your help.
Next time you change your air filter, you should install the "screen" covers that attach to the intake air horn, You can purchase them, or make your own, but they will keep mice out of your bikes air filter. Mice nest will kill the motor, if all their crap get sucked in the engine.