40khz vs 120khz or 40 plus 120khz US cleaning?

Thanks for the detailed response.

I have been using my VPI to do a 3 step cleaning with products from Audio Intelligent. The guy who originally started the company was Paul Frumkin and posted here on Audiogon.  Most of my records have been cleaned with that process. Have you compared the Alconox to enzymes? 

The US time I was doing did seem a bit long. I will drop if down to 15 and hold off on purchasing a new US machine.

I was using too much Tritan X-100!

Getting details from you is like pulling teeth. 

If you are using the Audio Intelligent 3-step process, there is no need to change. 

Since you are talking details, how much IPA and Triton X100 were you using?

I was using a capful of the Triton. 

The Audio Intelligent by itself does not work anywhere near as good as Audio Intelligent plus ultrasonic.

For vacuum-RCM always remember that YOU and the chemistry is what does a lot of the cleaning. The chemistry w/o good agitation is not going to do as much as it could. The vacuum-RCM rotating platter brush action is actually very slow. And while enzymes can soak aways some soils, unless someone has had sex, used your record for a toilet or a surgical table, they have limits, and they still benefit from agitation - think what happens with a clothes washer.

High quality laundry detergent such as Tide is a blend of surfactants and enzymes. The enzymes are proteins (...ase) that break down biological matter (sex, toilet, surgery). If they were the be all and end all, Tide would not have the lots of surfactants it does - CPID (whatsinproducts.com).