Thanks, I watched the video, interesting how many contradictions to other how-to guides. Will give this method a go - it seems easier.

Cheers for this, it seems the consensus is that it’ll need redoing so I will give this trick a go and hopefully save some time the second time around. Not looking forward to the removal part again though. That took ages! Oh well, I’ve learnt a lot.

Thank you, I found a way to add a link to a photo.

photo of the issue

Thanks for your reply. I used masking tape, I just obviously didn’t apply quite enough silicone. Unfortunately it was only once it had started to cure already that the issue became obvious. I think it kinda fell into the gap just a little, due to gravity perhaps, or shrinkage.