Will a UCS track section function properly if it abuts an insulated track piece?

There are no issues with placing a UCS next to an isolated accessory activation block. You should be aware that your UCS can double as a track feeder. With the 4 screw terminals facing on the bottom and going left to right, the first post is Ground/Outside Rail; The third post is connected to the center rail.

Thanks BMORAN4...

  I went a little over the top playing with a new soldering iron and now have track power about every four sections throughout the whole layout!      

  I’m planning on using accy power on the UCS track.  Can I assume the fixed 14 volt post on my KW is adequate for this purpose?

Also as long as I’m cleaning & testing all the UCS functions, any idea if acetone harms the vintage plastic (Bakelite?)  they’re not too dirty, just look a little dingy next to shiny new track...So far green scotchbrite doing a fine job, but some pieces have dark oil stains.  

Tom

@FlyPlanes-PlayTrains, The Power and Ground leads I mentioned above and suggested for track feeders were initially intended to act as a "reverse lock-on" to take track power to the two button controller. So the controller wires that would go to those leads can instead go to a common ground fixed voltage of 14V, but I find a variable voltage allowing to fine tune for given operations much more satisfactory.

As for bakelite/plastic clean up, I would use a shallow pan filled with warm water and dish soap. Much more benign than acetone. You want to avoid using abrasives on track. I would reserve green Scotchbrite for the absolute worse case. You will be surprised what CRC 2-26 and Goo Gone can do to cleaning rails.