I'd love some advice...I'm wondering about whether upgrading the headjoint on my Yamaha 581 would make any difference with my sound. My flute was bought new in 1995, and I had it adjusted and cleaned by a reputable technician about 1 year ago. I played a lot during the university years ('94-'98), and have continued to play since then, but not at the same level. I perform in some special events and concerts as part of a flute/guitar duo, as well weekly as the principal flute in my community band (not a very advanced group), but as a working mom no longer have the time to practice more than an hour or two a few times a week. Would a new headjoint possibly make a difference to my sound? What headjoints would work well with the Yamaha 581? Are there any recommendations? I love to play, but don't know a lot about the specifics of my instrument, or what features are desireable in a headjoint. Thank you for any help you can offer!