Margot: Re the 'clarification': if you look at a VPI 16.5 you'll see that the vacuum wand (the part that touches the record, spans that record from rim to spindle and has velvet-like lips and a slot to pull the liquid off the record) inserts into a spring loaded vertical pillar. The pillar is easily removed. Rather than trying to switch wands from a 'fluid' wand to a rinse wand for each step (inserting and aligning the wand into the pillar takes a little care), it is easier to buy a second wand and pillar from VPI and you just interchange wand/pillars for each step. (I mark the top of the 'rinse pillar/wand' with a colored dot so I keep track of which is which). I also use glass trays to hold them, nothing fancy. And I constantly clean the vacuum lips (a soft toothbrush will do fine) as well as rinse and scrape the applicators (folks have different preferences- on the VPI, i like the Disc Doctor applicator, which is more like a fuzzy replaceable pad with a T shaped handle- it absorbs more liquid than a 'brush' so you have to pre-wet it, but it does a better job if you are a 'scrubber.' Mobile Fidelity makes a version of this that is larger).
Doug's recommendation of AIVS fluid is a good one- i've tried a lot of different fluids, but like their No. 15 for problem records- you agitate and let the enzyme soak before vacuuming; you must do a rinse step with this fluid. (Some fluids are 'one step' or don't necessarily mandate a pure water rinse, but I invariably do a rinse step, even with less aggressive fluids). Here's a link to the piece. In it there is a link to my interview with the Library of Congress restoration specialist. (I visited their restoration facility in December, 2014 to do a feature on the facility, the archives and some of the collection).
http://thevinylpress.com/cleaning-vinyl-records-my-personal-odyssey/