Hi there, had a search on Google and on the forum but couldn't find anything.
A few years ago I stopped playing brass band and haven't touched my Getzen Eterna since. In a couple of weeks I'm off to Huddersfield Uni to study music and being in brass band country I will probably start playing again. Today I got it out to clean it and found that the 3rd valve slide Amado water key is seized. I've soaked it in lukewarm water and put some valve oil on/in it but to no avail. Has anyone had any experience unsticking Amado water keys?