m,
You just experienced why I recommend the higher quality transformers,
your Z 1000 should now run your layout with few if any problems. To many times
the smaller transformers are the actual cause of repetative problems that should really not happen. Glad the Z 1000 cleared up your problems, some day you might consider a Z4K with the side receiver, it opens some interesting control features
and powers everything quite well.
PCRR/Dave