RODI inside. How?

So the cleaning only went okay. I had some issues with the connections and tubing set up between the US 5/16th and the UK 4mm and 6mm. There were also significant issues with the amount of dirt/residue on the inside of the windows. The building is 10 years old and they have only had the windows cleaned twice in that time period. They are constantly driving vehicles in and out of the showroom, and while I know it is only trace amounts of exhaust in the air, it still builds up over the years. I went through 4 of the heavy scrubbing pads with only getting to about 80 windows. I then had to go back over the same windows with a polish pad to remove the “haze” left behind. Finally the bottom 8ft I cleaned traditionally only because I wanted to get the clearest view for the clients and I had run out of clean polishing pads. I did inform them that they need to have a regular monthly cleaning in order for me to get the windows to a perfect clarity state and then maintain them. It is going to take multiple cleanings to get the glass properly cleaned while using this method, but they are a LEED platinum facility so any reduction in chemical usage helps them maintain their status from what they tell me.