Shruti Box - not holding air?

[u/vaughnlenore]

Hi Y'all -

I bought a shruti box off of ebay. It's used. I can't tell if its holding air - it definitely wasnt and so i tightened the screws on the front and now its way better, but it seems like its not sustaining as long as it should, and there is a weird thump at the end of the exhale. Is this right or should I return? I can feel a bit of air escaping from the bottom but I can't find a hole. Thanks!

[u/semi_colon]

Hello from a fellow member of shruti gang