That was my bigger issue, if I did make a mess of things could I get back to "as installed" state. So the fact I can means I"m going to start playing and see what I can break! Thanks!
I believe I have an fxa5000 (and maybe this is the same as the NH20A, I'm not familiar with any of these). Is there a manual so I can see what options do what action and decide on best setup? What happens if I select the complete bridge option?