Completed this tonight everything went well Super happy
(main switch) In Wall Smart switch Ge 12711
Pretty much the wiring went as follows… Isolate the main switch power, then add the “Line” wire to the the line port on the Smart switch (non add-on) , Add the other black wire to the load side of the first switch, then add the red wire to the traveler port. Attach the white pig tale to the group of whites in the back of the box and the nutral port on the switch. Connect ground to ground port.
(4 Way Switch ) – Use Add-on 12711 in wall
Connect all blacks together with wire nut or wego push connectors( Do not connect to switch). Connect white wires and a pig tale, then connect to neutral on add-on switch. Connect the reds together then also pig tale, connect pig tale to the Traveler on the add-on switch. Connect neutral to switch.
Last Switch – Use Add-on 12711 in wall
Connect blacks together do not connect to switch. Pig tale the white’s and add to neutral of the add-on switch. Connect Ground to the switch, and then connect the red wire to the traveler on the add-on switch.
After thats all done should be good to go