Does anyone know what side the C-clip that holds the power steering reservior on the p/s pump goes on? The W163 ML's were easy to get off since they went on toward the engine. I did a 2006 SLK that I ended up having to pull the water pump off to get the C-clip off because it went on from the opposite direction. UNREAL......I hope it is an easy job since mine has started leaking from the o-ring between the p/s pump itself and the reservior.