I'm new to all this and having some trouble with the initial start up. I'm not ashamed to admit the solution is probably pretty simple but I feel lost. Brand new prs alpha 48x48 with spindle. I need detailed instructions for initially setting these switches. Does the x car and the y/z car need to be against the mechanical stops before I can run the setup file and if so, where do the bolts need to be in relation to the sensor? Somebody please help