Thought I'd ask for some advice on a problem I've been having lately. Recently (3-4 weeks) I've been having an issue with the upper register (above approximately G above the staff) where my lips are being what I can only describe as "blown apart". I'm getting an awful flapping sound with most of the notes up there. Like I'm flapping my lips, but in the upper range and with the pitch sounding. I've tried to fix it (including taking a couple of days essentially off) to no avail. I haven't been playing all that long (2 years) and I've just recently started to try to develop my high range, but since it's a relatively recent phenomenon I'm concerned. What could this be? I feel like the air support is there but the lips are unable to "handle" it. I don't think chop strength is necessarily the issue - I play a lot and have since I picked up the horn so I feel my strength should be adequate. I don't want to try to put pressure on the mouthpiece or clench the lips either. Could it be a mouthpiece issue? I play on a standard 3C. Any ideas?