I believe I ran that saw at the CT GTG, ran very strong!
Very sorry for what happened to you, but I also have to agree that by now everyone on this site should know that if they have a JMS saw, don't use it till you get it checked out!
I've said it before, but I'll say it again, I believe he did this stuff on purpose. Some sadistic glee in knowing that you have a great running saw that will implode.
Hope the cylinder can be salvaged and the saw restored.