It was out and apart 50000 miles ago for porting. Cleaned it up and greased the rear bearings and stripped the rotors. The rotors only had a couple places were they were starting to peel on the edges. Some small amout of case contact high and in back. Small scars on one side of rear from radial rotor movement. The hose is the one on the fixed orifice bleed behind the lower intake, that blows back into the passenger side valve cover.