Actually I have no idea why I took this part off....I guess it was one of those "hmmmm...I wonder what THIS thing does?" moments...but I'm pretty sure I didn't mess it up...just a couple of"O"rings that fell out and I put back on properly (so I thought) At any rate this is what I will look at first thing in the morning, knowing what I now know about this unit.
and Thanks very much for your patience and knowledge..