well i must be the best wfp around here, cause i get no spots, or does everyone forget like any other tool, preperation makes a good clean, its all about knowing your equipment and how to use it, you name it, i can clean it, all wfp, i dont know everyones situation, could be they are a learner, never had any formal basic training, or just miss informed, or just going by what they read on forums, any body thinking the wfp is a magic stick, thing again, experience and years of cleaning splits us well apart, anyone with continues problems, should ask someone that works in there area, to take them out for a day or 2, this way they at least they know how to use a wfp, there is a presedures that is supposed to be followed, but a few seem to think that it is all bal%&%ks, or simply just want to skip that part, as it gets done quicker, i think they call it the 3 clean con as i remember
dont follow the cars fogg lights on a foggy night in front of you, cause when he goes over the cliff, you go with him 