A stupid suggestion - but sometimes we miss obvious things - did you move the _clipCgear hook from the GearC2 mesh to the tail1 mesh and reposition its Hookloc at (x,y,z)=(x=0 =centerline, y rear of your float, z rear of your float)? and positioned adequately the water clips defined in the FM (they were defined as _clip29 and _clip30 in the original He45 FM)?