I'm going to have to take a look at this. I'd say the system cuts out 90% of the water spots I figured my water was just to hard and overloading the filter. I'm going to upgrade to something better for at home anyway.
I use a similar system (dual filters) at my home for washing personal cars. It works just fine but depending how hard your water is the filters may not last very long I maybe get a month or so out of them. Keep in mind I have very hard well water with a high iron content.
I had it happen with 2 of them so far 6"inch regular pads though i contacted ag and they took care of it for me... i havent had a problem with any of my other ones yet i have about 12 total 4 waves and 8 regular
I'm going to have to go with the flex as well. I've only used it twice but has has noticable power over the cyclo and is easier to manuver into tighter areas and curved surfaces