Hi all , I need to replace the drop arm and bottom seal on my 300tdi 110 . I need some advice on the best way to reach it . There seems to be little room to to maneuver a spanner and a lot of pipes and hoses going across the top of it . On the Trailerfitter's Toolbox videos on YouTube the wing appears to be off the vehicle when he's changing it . Any advice on how to tackle the job ? Thanks , Gerry .