Hi I'm very curious about 1 thing. I had 2 student horns made in taiwan that leaked out of the tuning slide. Now I got myself a Stomvi Mambo 5 and it slowly leakes out the tuning slide also. Basically want to know if you all get what Im getting which is not actually classifed "leaking". Take Trumpet out of the case, pulling tuning slide out so it is in tune with piano (piano is flat so tuning slide comes out maybe 2 inches or little more) Play for 30 min. Look at tuning slide... can see water bubbles on slide where water seaped over 30 min worth of playing. Is that something that happens in general? I mean 2 student trumpets and one higher end horn (mambo 5) silver plate and they all seem to be doing that. To assume I got 3 trumpets in a row (1 replaced by another and 2nd returned for refund and now 3rd baught with same thing happening) as a coincidence is hard to believe. So Im assuming it is normal. Anyone else get that happen???