Soldering not a problem. Everything is in the tool box

I've already decided to make up a new set of soldered push rods. I do agree that it will likely be a tighter setup. But I also think (but I haven't tried it yet so...) that there will be some binding as the servo arm rotates and pulls the rod pair off axis. This is where the Sullivan splitter helps.

The primary problem with Sullivans splitter seems to be differential motion of the elevator halves if any rotation of the rod connecting the dumbel to the servo occurs. It can be avoided with the correct setup, but will appear with the wrong setup.

My setup, of course, is wrong. But with a little effort can be made right. I guess I'll try both and see what I prefer.