I have a hydro force sprayer that doesn’t always pick up soap through the pickup tube. I can’t figure out what’s wrong with it. The temperature is still fairly mild here. So I don’t think the water is too hot to draw soap. The filter is also clean. Sometimes it draws. Sometimes it doesn’t. Does anybody have an idea what could be the problem? I could really use the help. It’s totally frustrating to spray and clean half a room only to find out I pre sprayed with water. Thanks.