I have the new Z max and love it. Been spraying the same chemical for a while now and need to change things up and clean everything out. I've never been able to get all the product out of the tanks. On my previous machine you guys had the clips that screw to tighten the hoses to the plastic fitting. I would unscrew the pipe and drain it all out. The new hoses have a clamp i'm not familiar with. Any recommendations on getting all the product out of the tanks?