Flammable 403 door catch.
 

Back in 1965 I managed to break the cast alloy driver's door catch of my
first 403, fortunately within sight of the local, Barwon Heads, garage.
The proprietor assured me he could weld the bits together and I drove home,
holding the door shut. When I collected the repaired catch the repairer,
looking very pleased with himself, told me that the magnesium alloy had
burst into flames but, having been a RAAF mechanic, he was familiar with
the material, had put out the fire and finished the job. Be warned.