Hi folks, finally managed to trace the leak on my 2005 rrs, when I pour water down the sunroof channel only a small amount of water is coming through from the hole behind the passenger vent, I don't know if it's a split pipe but some of the water is dripping out before it reaches the exit hole behind the vent and making its way into the passenger footwell, hope this might help out somebody in the future with the same problem, also does anyone know how to acces the pipe that exits in the passenger wing as I need to get into the other side of that panel to try and repair it now, many thanks