Due to the way all the modern LEGO gears are perfectly quarter-turn symmetrical, there doesn't appear to be any way to assembly 2 opposing gears such that I get a 2 perfectly parallel axles.
This image illustrates the problem:
When one gear it perfectly centered, the other gear is rotated half a tooth.
How can I get 2 opposing gear's axles to be perfectly parallel? Are there any older or special gears that are useful here? Otherwise, are there any good workarounds?