T6 California - Pop Top Sealing Bits Falling Out

[obwankenooby]

Hi all,

Let's hope i'm posting this within the correct group.
Cleaning my T6 Cali yesterday, I've spotted some heavy missing bits from the pop-up roof top sealing.

Is this something usual? Are such parts falling under warranty from VW ? Is this easily replaceable?
Maybe, is there something better I should get as a sealing solution from a 3rd party?

Thanks for your inputs,
Kind regards,
OB