Had a good look around the car found a lot of corrosion at the front of the sill and floor pan also the lifting hump (Nearside pan,sill and hump still look excellent) a couple of years ago found that the drain for the sunroof had detached from the o/s door pillar outlet so water had got into the floor have no idea how long it had be like that I'm assuming this was the cause ? Any thing else I should look at before I repair ?.