OK guys... so I've had my XB12s for 2 years now, but i still consider myseld a newbie. Not sure what the little black tube is that terminates right behind the left footpeg mount, but I've noticed its been leaking oil recenty. Coincidentally, it seems to have stared upon my last oil change. Can't say it's never happened before, but I never noticed a little puddle? Cheked the engine oil level and seems to be good. What is this all about? Thoughts?