Talk to your director and ask for their assistance in fixing it; there are a number of temporary ways to fix a loose pad, but it has been about ten years since I've done anything but percussion repair. I don't trust my memory for something I only did occasionally/part time that long ago.
M.
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My thanks to all the wonderful members here; I will miss the opportunity to continue to learn and work with you.
For those who seek an alternative, it is coming.
So long, and thanks for all the fish!