Yes i have listened very closely the last few weeks. (I am unfortunatley so paranoid about hearing clicking noises that i somethimes freak out at the sound of my own breath while in the same room as her.)
As far as her mouth/throat goes, nothing out of the ordinary, no red/black spots, or bubbles at all.
As far as the clicking It does not seem to be inherently linked to breathing alone. And just like the "yaking" episodes is only shown right after eating
And finally as far as R.I goes, if i do ever see bubbles in or around her mouth and/or she goes off feed (she has been feeding great!!) i will act appropriately in treating her.