Hey Brady, what would you recommend for cleaning and greasing the rack and pinions? how often should this be done?

I maxed out my table to 24x34 by moving the prox switches to the max and then using the upper left corner at my "home" each time. I do this my finding home from prox switches, and then i send my Y axis to 33, and then zero all axes. Is there a better, or more consistent way of doing this since im using this as my HOME every time? i am trying to set up for productin i mind, jigs and sheets of material. i need everything to be exact so i can flip the sheet over and mill out the rest (for my 2.5" thick piece) nevertheless, i need HOME to be the same EVERY time....