Hello everyone as most of you know i had a problem with smears but thats all sorted now today i had 2 houses which left small lines after i had done them (looked like little water lines after dried) could this be maybe little niks in my rubber although i have looked or maybe grease on my rubber i will clean my rubber tonight with white vinegar hopefully that works.i think it could be as im doing domestic houses i just do downward strokes maybe as im starting at the top im pulling too much water down the window or maybe this could be too much fairy liquid?????????? i tried with less fairy helped but still a few lines?