Leaking rear quarter light window

The one in the boot at the side

When we have heavy rain it drips in still, I've resealed along the top putting sealant under the seal and sealed along the removable trim between the door and the window.

It seems to be running along somewhere and then coming into the boot through the seal along the top of the window.

Short of taking the seal out and refitting after further investigation does any one have any ideas, bright or otherwise.

Many thanks
Mark

remove glass and seal with RTV silicone cheap B&Q sealant is crap and won't last. whilst your there do the same to the alpine lights and the sunroof.

Cheers.

Don't use B&Q sealant, I got some decent stuff.

Will do window and alpine but not bother with sunroof as there isn't one

Thanks