I'll start a new topic probably tonight.
Most of it has already been said, but all worth saying again. Plus one or two things I didn't fully realise, and probably lots don't know.
For example (I shall repeat this), It has been said by some, that the client, esp domestic (housewife etc), isn't really bothered how we clean the windows, as long as they are clean, so why worry?
That viewpoint, belongs in the past. It definitely does matter, the client should be bothered, and will have to be bothered.