Question: I purchased a new wand , with 2" tube, 5 jets, swivel head. I adjusted all the jets so they are turned the same way for the proper spraying pattern, and did this restaurant and it left major streaking.
I had other jobs that it did the same thing with. so I ran a test on 2 vacant condos , I HWE one with new wand and one with old previous wand, same chemicals and rinses same temps.
New wand still left streaks, old wand left carpet looking great.
I have cleaned this restaurant many times without issues.