Why we save junk for 40 years!
I had two junk freight cars that had some roof walks that were needed.
My RC airplane heating gun and a hex screwdriver removed the walks from the car (I finally pitched the car, although I did remove and keep the doors and door guides).
My nice all metal vintage car needed a roof walk. A little 'rattle can' silver, thick CA and she's good as new!
And what are the chances of that roof walk being exactly the correct length that I needed?
By chance, I had a 2nd same type junk car that sacrificed its roofwalk for another vintage metal car. This metal car had a warped roof and, while trying to straighten it, it broke. The walk was cast metal so it broke a lot!
The metal roof needed some thick CA to re-attach it. After the CA dries, the roof walk will be attached.