felt pads at the front end of the sliding roof guide rail on an SC

[aussie.porsche]

Hi,
There are two felt pads at the front end of the sliding roof guide rail on an SC on both sides of the car
Are there any more felt pads besides these?

[Flojo]

? you are totally missing the Aluminium corner part, way more important,

[aussie.porsche]

I removed the aluminium corners to show the felt pads under