I've noticed when my bike is parked in the sun all day it drips something from one of the hoses by the shifter. I haven't traced which hose it is yet. The substance smells like gas but feels oily, so I think it's a nice blend of gas and oil. It looks to be a medium brown colour. Does anybody else have this happening? It has never dripped in my garage, only outside when the bike is in the sun.