ok so i sussed out underneath and its been cut though the chassis rails "wow" what a great job! with nice shaped strengthing plates etc ,near the middle of the sliding door and in the door pillar and i guess at the top of the windscreen where over time the rust has started "apears to have been rust converted and fish oiled in places , i hacked out the rust on the worst pillar and its just the outer skin so im feeling better .
show us your gates