I could do that but I think it makes more since to allow bypass. I didn't seen much better results either. Personally immunity impressed with the ET1 PN at all. I feel it's drastically underpowered and I'm trying everything I can to get make.itnwork. but it might just be a feeling as it's cleaning ok from a visual perspective. I just hope it's deep cleaning... is the D4 even capable of deep cleaning carpets?