I am very interested in the 4kw jaw crusher. I have a lot of highly mineralized ore that I need to crush. I have a few ? About the 4kw unit. Will replacement parts be avaliable? Does the unit have an overheat shutoff. I am very interested in the jaw crucher but only the 4kw. I there are a few units I was looking at from other companies but Shaun from silver spike prospecting convinced me that you guys have the best product that meets my needs. Please let me know when these are avaliable again.