Still playing around with the Z4000 - see https://ogrforum.ogaugerr.com/...58#79142442707728458
Based on tracking the common wire last night I may have a potential feedback issue though am not sure as yet (diagrams on the other post).
I sort of declared victory last night and ordered another Lionel 180W power brick. This way I will have three bricks feeding three powermasters and use the Z4000 for switch motors, ITADS etc.