Because I knew what was going to have to be done with the internal roof rails, we unpicked the roof skin.
We stripped the remaining filler off the skin, welded up some rust holes that appeared(!) then gave it a good flippering, fettling and farnarkling to make it as ripple free as we could.
It was then given a coat of rust converter on both sides, then carefully stored away until it was required...
Around this time I also had the heater core and radiator refurbished:
Yuck!