Setting up and tuning dual-motor X axis

[lucan07]

I am running a DB25 setup just a cheap 5 axis chinese bob and 4 DM542 drivers with 425 oz 23's, they are tuned identically and synced in mach3 it keeps them synced and I have had no problems at all losing steps. Only on initial setup of slaving one hiccup but that should be done before connecting drive screws so my own silly fault, if you try this ensure your ready with the E stop. I have a park routine away from homing where I can use a straight edge to check, and at first checked slave alignment regularly but now rarely as I have never found any slippage.