@JCitron: Yes, I found a set that works, though I have to drop them by 0.75 to meet the top of the pantographs. And yes, the wires can be very thin from certain angles and it's hard to line things up to look continuous when the splines are not actually connected.
My problem has been with junctions in yards where multiple tracks are converging - somehow the pole in the spline ends up in the middle of a track. I use a wires-only spline and drop a signal bridge (object) across. At -2.00, it lines up well enough to look like it is actually supporting the wires. I can usually position them such that the legs clear any track. Obviously, being wider, there's extra room sometimes, but I don't mind it. I may put some electrical boxes in the space to make it look like it was intentional and part of the overall electrical and signal system!
I'm not trying to be prototypical with a fictitious route, but it should at least seem to make sense - wires floating with no support, obviously, won't work. I had considered a rationalization to avoid putting wires in my yard - the electric locos have a battery and can run around the yard for short distances without catendaries! But then I decided to accept the challenge. Problem-solving is part of the fun!
But I am grateful for the clone tools because I can reproduce the set-up at the opposite end terminal without having to recreate it!
I'm glad my little tip helped - a lot of people have helped me on this forum, so it's nice to be able to return the favor!