We are aware of this happening with some stoves. Mine works great with my alcohol stove; but some alcohol stoves burn too hot, or the combination of stove, windscreen, and pot creates an environment that is too hot for the ti-rod material. The good news is we have found that fringe material.
This was brought to my attention a couple of weeks ago by a reader, and I am working on a redesign of my z-stand that will get the material out of direct contact with the stoves flame. One of our readers loaned me their culprit alcohol stove for testing. I will be working on this over the weekend.
Thanks and appologies to those who have experienced problems,