Stringreen: In case I missed it, Did you ever report what type of "audiophile approved" record cleaner you use? I assumed, by your posts, it was something other that the steamer?
FWIW: I have always steamed my lps before my normal cleaning regimine.
I use to use the original Mapleshade steamer that was highly recommended in these forums years ago. Since then, I purchased a db tech steamer off of Amazon a couple of years ago that really works well. It has 95% of the steam power, 95% of the steam outflow/pattern area of that machine and in addition, has similar water reservoir capacity, and much better ergonomics.
I find all of these things very important as I do with any tool I use. The end result is only as good as the well designed tool that is used, IMO. I'm willing to pay more for such things. If I remember correctly, it cost under $40.00 when I purchased mine.
FWIW: I would not put a lp into an ultrasonic cleaner that has anything stuck to it's surface such as inner sleeve/paper. I have an Audio Desk and a 16.5. My first goal in cleaning is to remove all contaminates from the lp surface before the lp sees the last two machines.
BTW: When I steam my lps, after I scrub them with enzymatic cleaning fluid, I then hold them over a sink while steaming off any crud. Then and only then do I proceed to the next two machines.
The ultimate goal is, for me, when I introduce the lp to the AD cleaner, to have the very least possible contaminants on the lp surface so that cleaner can perform it's job with as much "clean water" as possible for as long as possible of time. Reducing money spent on associated fluids etc...