Had a leak in the big middle sunroof for ages. soaking the seats when the car was parked on certain angles.
on inspection i found that the drain holes that run to the front and back of the sunroof were block with green algae type leaf sludge.
Fix: trace the outlets to left side side front (when sitting in) almost under the step behind the bumper and back same side under the rear valance or bumper.
found that a straight connector for a standard garden hose went on with a wriggle and then pressure from the hose pipe (took quite a bit) cleared it. same front and back. Sweet