Hi everyone my names Matt been WFP’ing since June (only a couple of days a month) and then have been putting all efforts into it since September. I have had some really hard first cleans (I scrub frames first on all tops, then windows, then move to the next one, do all tops on fronts, go back, re agitate twice and then rinse using the S method - seen this on YouTube) no complaints until the other day when the person said there windows looked awful. I haven’t been back (offered to redo) and lost the customer, however, no real feedback from them. I have looked a YouTube for the best firstclean technique and maintenance techniques but, they seem to be really conflicting. Can anyone help out and advise the best way they do it and one that works well for them? I use a Gardiner SLX 25, and have a medium sill brush, and soft flocked for leaded and Georgian windows and a Supreme for everyday uPVC windows. Thanks in advance for any help and techniques. Cheers Matt.