On the topic of power routing problems with the #4s.......
Some of you might not know that Kato had a labelling error on a run of the #4 turnouts.
The WORDS on the bottom of the turnout are BACKWARDS.
So when you follow the words to make them power routed--- oops! You are actually doing the opposite!
So check out your #4s to see if that is the problem. They work fine-- they are just labeled backwards.
Here's how you can tell. On any of the rail settings, there are two holes for one screw. You choose where you want it right?
Well, look closely. One of those options has the SPLIT contact points- the other has solid contacts. The split side is the side for NON-power-routing (think- you are bridging a gap so power is ALWAYS on.).
If you want power routing, you use the solid contacts.
Forget what the words say. Look at the contacts. (and use a sharpie on the bottom to correct the error if you have the ones with bad label).
(I hope my memory is getting this right and I haven't gotten it backwards).
BTW- I myself have some of these mis-labeled turnouts.