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Venting valves only has an effect on slide pulling. If you are not pulling slides prior to attack look elsewhere.

bloke wrote:

nworbekim wrote:it feels as if there is air pressure building up somewhere and having to be released.

it's not a big problem, more of an aggravation. a slight glitch that makes me uncomfortable and if i can tweak it out, so much the better.

yeah...That happens to me too...

Do you experience the problem on open notes or just certain valve combinations?

In all honesty though, I find pressure in the valve tubes very annoying, and like to pull slides; I feel you on this issue. My advice is to find a horn with vented valves and play it. If you like it - and it solves the issue - get your own valves vented!

FWIW, Changing temperature (as it gets warmer/colder from playing/resting) of the instrument during performance can lead to differences in the pressure in the valve compartments. Although minor, while performing, I always hit the valves before an entrance in performance to avoid any minor pressure disturbances. See if this behavior helps your situation, if so, it is much cheaper then venting!

Good luck.

Some notes speak better or differently than others. Some you might miss because the note in inherently out of tune on your instrument. Try buzzing the suspect note and hitting the pitch spot on perfect exactly when you want to, then try it on the horn. You may find you miss it because the note is flat/sharp on that instrument in that partial.

I have my valves vented and it allows you to pull/push for that funky note so when you play it, it is spot on (like a Db on a CC tuba). Otherwise you miss the note.

For what it's worth, there are several folks close by your neck of the woods who I would trust to do this on one of my horns. (I live in Ft Thomas, just south of the Ohio River.) Dan Schultz (Evansville) has vented valves for me - I've never had a concern or problem ever. Without hesitation I'd let Norm Eppley (still in Frankfort?) do it. Gary Dafler at Hauer Music in Dayton. Those guys are just a few hours' drive away from you at most. Bloke is a little further away, I think, but I'd trust him too. I'm sure there are quite a few others.