I think the pops/clicks were damage done by mishandling (previous owner???) or in manufacturing. I don't know that they disappear. I think the Degritter may give such a good cleaning that everything is easier to hear. A good thing in most all cases I'm sure, but with the few that have some noise, a catch 22.
I have used a VPI 16.5 w/ Audio Intelligent solutions for many years. I have the one step (#6) and 2 step (#15), requiring a distilled H2O rinse.