Bad key?

[Robert Cecil]

ok, so I just bought and had refurbished a Selmer K series from the 1920s. Turns out to be a real nice horn. However, I am having trouble jumping from open G, or really any other non- registered note, and try to play the d#/Eb key and it doesn’t want to play. I looked all around and don’t see any problem keys. All the other registered notes play fine. It doesn’t make sense either, as the D#/ Eb key “opens” rather than closes. It seem like it’s not throating right or something. Any ideas.
Thanks

 

[Gandalfe]

And those are "just" the problems that you have noticed so far. I usually take my new acquisitions into a tech for a quick look-see. It could save you a lot of time.