for #2 that's just the motor stalling or loosing steps - it happens to me when I try to go too fast... could just be a tuning issue - did you have to tune the motors or did you get the computer and software all in the same deal?
I only have experience with Mach3 as well - so if you're using that you should be able to go into the motor tuning and take the speed down some and avoid the motor stalling (unless it's the linear stuff binding) but if you slow way down and it still stalls then that should "say" that it's binding or is blocked or something |