K&M 14335 Tenor Sax Stand "Jazz"

I've recently bought this stand and I've used it only 3 or 4 times. I've always been very careful because it doesn't look very stable, but I trusted in it because it is supposed to be a quality stand. Today, the last time that I've used it, it has fallen out with the sax. I think that the upper part of my sax is damaged because it doesn't sound good now ... and it is a good sax, quite expensive. Please, don't put your sax in risk using this stand. I'm very mad at this moment. Take care.