The Z stepper on my 4X8' machine is going bad. I want to upgrade all of the steppers to servos but that's a big cost and I'd like to get back up and running quickly. Is it a problem to replace just the bad Z stepper with a ClearPath Servo and related power accessories to drive it? I'm already getting ready to make the switch from Mach3 to Mach4 and replacing my current controller with a ESS & BM3 combo so I've got some work to do anyway. I know doing them all at once would probably be one less headache in the long run.