Zach, maybe more photos would help. I’m no expert on the model in question. On some engines the smokebox details can get hung up a bit during disassembly even with the steam chest screw out.
Mike, thanks man, glad you can put up with my unpolished droning. Someday I’d like to have a fully fitted model machine shop with proper quartering abilities. The most common quartering jig I know of is the NWSL one:
https://nwsl.com/products/the-quarterer-iii
Not sure there’s much of a diff between brass and diecast quartering other than diecast drivers being ‘captured’ in a rigid frame.