Done and done... After many hours stripping paint and polishing the nickle I had to say that good enough is good enough. I put the 242C back together this morning, finished some bits and bobs like the fuel cap and this afternoon tied on a mantle and lit it up.
Thats a Peerless #24 mantle which is a Coleman #99 equivalent. I'd read that you can use a #99 in a 200A to get more light so I figured I'd give it a shot here. I don't like it, it seems very yellow and not as bright as it should be. Its hard to judge in daylight though. I'll try it again at night and see what I think then.