Is the pop up one out of a 106/saxo? They leak for a pass time, I did soooo many of them in my 4 yrs at a Peugeot dealer. I've said it so many times but it still seems to be the recommended one on this forum :*.
I know what you mean... Some one got lucky with a non leaker, and they all follow...
I sit and repair Clio 2 sunroofs now.. Prob 1 a week at the mo..
Try all of the above.
Remove glass (clean glass), clean trim whist glass out, (i wouldnt grease it though)
Whilst out check how tight the front hinges are then the rear attachment (winder or handle.)
Replace and fingers crossed.
If that doesnt work, its frame out.
All good on the condition the screws arent corroded.
if you need any help, call me..
01273 871717
cheers Austin