Xiekitchen, I am not sure I agree with you. I beleive the cleaning fluids do most of the cleaning, aided by the brush. I don't think alot of pressure is neccesary. Just enough for the brush to reach as close as possible to the bottom of the grooves. I would think too much pressure could make small (probably inaudible)marks on the vinyl surface. It probably depends on the type of brush used.
Damaging records with a hand turned machine.
What are the does and donts about using a manual record cleaning machine????? Can you press too hard??? etc.