I’m doing some major work (subframe replacement) on the rear suspension area of a Yeti 4x4 and noticed the propshaft flexi coupling has a white circle marking about the size of a £1 coin on the outer ring surface. Any ideas if this is important in relation to how it must fit when refitted to the Haldex unit drive coupling? I’ve noticed the Haldex drive coupling has a 8mm drilling on the non-mating side of two of the three coupling arms. Does the non drilled arm correspond to the position of the white circle on the flexi disc?

The white circle marking on the flexi coupling outer. This is an OEM marking.