the other night I was struggling with the horn for the first half of the 1st set. I was playing in tune, but it was hard to play the horn. I was chipping notes and started to get worn out. I couldn't figure out what was going on. My method for playing in tune is to audiate my part while I play and fit it in with the band. I find that when I audiate, I play in tune. When I just think about playing in tune I struggle with pitch. So after the first 45 minutes of the first set I pulled my tuning slide out about 1/4th inch. Voila! All the problems disappeared! Amazing how much less work it is to play in tune when the tuning slide is in the best place. DUH!!!