Replacement frame is in the garage and ready for wire brushing and paint. Big job swapping frames but the end result is worth the effort.
A quick test with a wire wheel in the cordless drill on a small section found black paint underneath all the mud and crud which sort of changes my plans for the choice of paint. I've been told POR-15 won't stick to painted surfaces so I'll have to go with good old Tremclad or Rustoleum.
