30 year old UPVC beading replacement

[Fast_Muchly]

Hi
Had to bring something in through front window today and unfortunately some of the beading has become damaged anyone know which this is or one that's newer that will replace it please . I know it's a long shot .

 

[crank39]

That's a shuffle bead which means taking out the wedge gasket from inside which then allows the glass and bead to slide onwards releasing the bead, beads to clip in and work properly need to come from the same manufacturer as the main profile and in any case all modern beads are internally glazed so they won't fit anyway, how bad is the bead, a picture would help, maybe a magic man smart repair would work?