Hi Wilmer, You mentioned in an earlier post that you use a Bach 304 Eb/D trumpet. I picked one up recently becauce it was a super bargin. Then I realized that it was a pretty good horn! I liked it better than the high price horn I was using!! I was wondering if yours is all stock on both Eb and D sides and If you use your Bb mouthpice with it or do you change? Mine is just set up for Eb but I can order the D slides anytime. Just a few pitch things I'm trying to work out! Thanks!