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[MadMojoMonkey]

That the observable universe is expanding? He looked at a region of the universe, that is all. If the tide is coming in at one location, one doesn't assume it's coming in everywhere

I think this is a fair critique. Now let's move away from metaphor and discuss the actual observation and what our current theory says about it. If that is inadequate to describe the observation, then we will hypothesize a new idea to fit not only this observation, but all previous observations, and hopefully predict a new observation.

Frankly, we're still pinning down Hubble's Constant, and we're not entirely certain if it's constant, and we're not certain if it's related to Einstein's Cosmological Constant (thought by Einstein to among his greatest mistakes to include in his theory, but seems like it wasn't), which we're not sure if it's constant, either.

My problem with space expanding is that every action has it's equal and opposite reaction. If space is expanding, what is contracting?

You're referencing Newton's Third Law of Motion, but misinterpreting it.

Newton's Third Law says:
When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.

Again:
Object A expresses a force F on object B in direction x IF AND ONLY IF object B simultaneously expresses a force F on object A in direction -x.

Questions along this line should be: Our universe is acquiring energy. What is the source of this energy? What is losing energy to our universe?

Time? That's how it works with time dilation. Space actually contracts as one reaches light speed, and time expands; but only from the pov of an observer. Expansion and contraction of spacetime is relative. It's only happening from an observers pov.

This has nothing to do with equal and opposite reactions. Furthermore, it took a few years to convince the physicists of the world that we can do this and we haven't violated any momentum or energy laws. So the notion that this is somehow a consequence of Newton's Third is not appropriate. If anything, Newton's Laws are consequences of the more broadly applicable laws of QM and GR.