Madfloyd, applying just slightly more pressure than the weight of the Walker pads by themselves is what I've found to work well. The fibers of the Walker pads reach into the grooves without applying significant pressure.
Think about this more as "agitating" the cleaning fluid in the grooves. Allow the cleaning fluids to do the work and the cleaning pad action only needs to be gentle. For the scrub after applying the Prelude Step 2 solution, I use a back and forth stroking action sufficient to build up a froth in the fluid. For the enzyme Step 1 and the Step 3 and Step 4 rinses, I'm quite gentle - just stirring things around thoroughy in the grooves. I've also found it best to be sure to use enough fluid in each step to "fill the grooves" -- using too little fluid often results in inadequate cleaning results.
In my experience, scrubbing harder (within reason) will not do any damage, but I've found that doing so doesn't clean any better when one is using one of the better cleaning fluid solutions, like the Walker Prelude cleaning solutions you are using.
Think about this more as "agitating" the cleaning fluid in the grooves. Allow the cleaning fluids to do the work and the cleaning pad action only needs to be gentle. For the scrub after applying the Prelude Step 2 solution, I use a back and forth stroking action sufficient to build up a froth in the fluid. For the enzyme Step 1 and the Step 3 and Step 4 rinses, I'm quite gentle - just stirring things around thoroughy in the grooves. I've also found it best to be sure to use enough fluid in each step to "fill the grooves" -- using too little fluid often results in inadequate cleaning results.
In my experience, scrubbing harder (within reason) will not do any damage, but I've found that doing so doesn't clean any better when one is using one of the better cleaning fluid solutions, like the Walker Prelude cleaning solutions you are using.