Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

I don't have any better advice as those given before.

After a longer discussion in another forum, I decided against de-soldering the boiler end-cap. I was given a lot of reliable advice on how to do it and even managed to de- and re-solder the end-cap of a disused boiler, but I was not sure how much damage I would inflict on the boiler of my Carette 105 overtype... Lucky enough, the drain tap (a comparable case: no handle, tap stuck, the whole fitting turning but not coming off...) miraculously could be screwed tight (great sigh of relief...).

So if you would like to de-solder the end-cap, I could even share an "educational video" with you provided by Walter in W. Australia...

You see, not much help to offer, but I can really feel with you...