can anyone help with some sunroof parts? The parts I need are
Guide, left 3269076
Guide, right 3269077
which is part number 4 in this diagram:

That white block is made of plastic and is split ...

... which means there's not enough pressure being exerted on the metal pin (12) so the sunroof on my GLT isn't sealing properly. It's not leaking (yet) but the wind noise at autobahn speeds isn't so great.
Does anyone know if any GOLDE parts from another car would fit? The sunroof panel seal is the same as a VW 1303, Scirocco 1, Golf 1 etc. so I'm hoping there might be other similar parts too ...
Cheers
Tom