I have a summer cottage on a lake in N.E. Ohio. I shut the cottage down and drain the water each fall and then open it back up in the spring. This year I decided to get rid of my old jet pump and replace it. I bought one of those Harbor Freight 1hp shallow well pumps (max lift 164 ft, max suction depth 26 ft.) ( I estimate the well is 20-30 ft deep). The pump sits in a pump house next to the cottage and is only 3 feet from the well head Along with the new pump, I replumbed from the well to the new pump replacing galvanized with well pipe (poly pipe) and barbed plastic fittings with metal clamps at each connection. There is a new checkvalve between the wellhead and the pump. I triple checked to make sure all the connections were airtight by using soapsuds around the fittings. The pump will draw water and shut off, but I can hear that sound of marbles in the pump meaning air is getting in. Also, when the toilet is filling up, there is a moderate amount of bubbling. There is some spitting coming from the faucets. I can live with this if I have to but obviously something is not right. I have not taken the step of pulling the well casing. Is this possibly a problem that will go away with use? Thanks in advance for any and all suggestions.