Right ,,, How do you lads attempt to stop Bulk head from rusting on the front window corners??

I can just see the rust starting to apear on the Passenger inside dorr frame...How do you prevent door seals the cause here whts the story form Balamory??? WD40 Cure???

sand paper off the rust and paint it. if it's rusting from the inside out then it's going to be tricky to solve as you need to find the source of water leak first.