Not yet the van is still in garage that's why I'm asking you to clarify. Are you saying that it cannot possibly just be the leaves causing the leak and that it must be the bulkhead itself leaking without a doubt? If it's a common problem with corsas combos etc then the garage should know because its a vauxhall garage, none of the cheaper garages knew what to do about the problem. However I would not be surprised if they were feeding me bullshit so that's why I'd like you to explain why it could not be just the leaves??