2008 XKR CONVERTIBLE front window leak

[Kilbroneyxkr08]

I have a 2008 XKR Convertible and there is a leak on the RH drivers’ side- if the car is parked outside in the rain, water gets in onto the drivers’ seat and runs down on to the carpet below. This does not happen on the passenger side. Could it be a faulty seal or maybe the seals don’t meet properly or do I need to reset the window closing system? Thanks in advance for your help and advice