Renault Megane Cabriolet 2.0 16v VVT Privilege+ Review

Just read a few more reviews on here. No one seems to explain how much water is coming in through the roofs or where it is coming in. Main dealers, whatever the manufacturer, are notorious at seeing us all as a licence to print money. Especially those out of warranty. My wife has an Audi TT Roadster 3.2 and its roof started leaking, they told me it would cost £600-900. I researched on the net, it took me 15 minutes to fix a blocked drain hole and nothing else. Information is power but only when you pool knowledge. Surely some one must know what is the cause of this re-occurring problem! If you do then you need to post it on here it will help all these other drivers. My roof has never leaked. I sometimes after very heavy rain get a couple of drops on my lap after opening and then closing the door but then ALL roadsters /cabriolets do this, I have had many over the years.