My thanks to all - you guys at MSC blow me away with your knowledge and expertise; I'm an old fart who, by comparison, knows little about cars, except I love driving my Micra! and I want to learn.......
QUOTE=Low Rider;314026]
As for the drains, if you've got a 3-door then it's quite a simple job to get a couple of threaded plastic drain fittings and re-route the pipes out into the rear panel so it drains out behind the rear bumper. Chances are it's perhaps too late, since they corrode from the inside out, but always good practice incase your sills are not too bad......good stuffing of cavity wax in there is also good if you're routing around in there