LEAK rear 'shark fin' - 1990 318i Touring

[Walter]

Hello all,
Any advice please.
I have a leak that is entering the car by running down onto the very rear inside corner of the 'rear offside glass'.
It appears to me that it could be coming in via the 'shark fin' mounting holes although I can't actually be sure.
I've removed the inside car corner vinyl panel and note that you can't actually see from the inside the mounting holes for the shark fin as they are in a void.
How do you remove the shark fin ? Is it just a case of gently prizing it away from the car ?
If it is this, any advice please on how to stop the leak .
Many thanks.

[Cloggy Saint]

This is a known area for leaks, usually because the grommets holding the "shark fin" in place have deteriorated. Prise it off and replace the grommets, or add some sealant around them and see if that does the trick.

[Walter]

Thanks... I'll prise it off as you say and order some new grommets.

[Walter]

Me again !
I prised off the sharks fin and taped up the holes. Then I got my watering can out again.
It appears that the leak is not via the shark fin but coming from the window seal itself.
How easy or difficult is it to get the side glass panel out ?
Thanks.

[Cloggy Saint]

It's bonded in so best left to a professional.

[Walter]

Thanks for this advice. I thought it might be out of my league.