Geyer wraps are well known for those bad notes. The fix?
a very well known east coast player said, "the first thing I do when trying out a Geyer wrap is try to play the high A and Ab. If it's not there I move on to another horn".
The only thing I have seen that works is changing out the leadpipe, with a good leadpipe maker, but this usually also ends up changing the air resistance.
If this is a new horn contact your dealer and tell them the notes don't work. It is a craftsmanship/manufacturing issue and they can change the leadpipe for you under warranty. If it is outside of the warranty or used then you can change the leadpipe yourself or sell it to someone who doesn't have an high A yet.
It's a Carl Geyer ca. 1935, found it used through a small dealer. I may have to change lead pipes. Blows so easily and cleanly, and I love the tone. Interesting about the lead pipe, since the receiver is super huge, an American shank almost disappears into it. Thanks
What lead pipe did you use? I've been thinking I'll just order one to try, but would love to get it right the first time. Not near anyone that makes, so will have to do a trial and return if not liking. Thanks
I've got it in the shop right now getting a leadpipe installed. The local shop buys generic conn tapers and modifies for a clearer upper end. We'll see how it sounds. I'm hoping the bass will still be there, since it has a killer low end.