My Yamaha Birch Custom kit has developed a problem with the middle rack tom not resonating. It only happens when I put it on the double tom holder on the bass drum. If I put it in the first place, it resonates fine. The same as when I put it on a stand by itself. When I put it in the middle position, it just dies. Ive tried replacing the middle tom holder on the tree. Ive moved it up and down the arm, moved the arm up and down, but nothing helps It used to sound fine. I don't know what changed to make it sound this way. I remember reading about someone else on the forum having this problem but I couldn't find the thread.