did you put some water no the glass first???? thats why the rubber is skipping... might even be a film on the glass.. i always take the glass and clean it off real good with
Windex and some newspaper.... glass is so clean it looks like it is not there. and always use good real rubber blades like Ainco.. not the cheap $2.00 blades as they will not work.. never had a problem with them doing this.....
