Shallow Well Jet Pump Problems

Hello, I am attempting to replace my shallow well jet pump for my house water supply. Here is what I started with. 1/2 horsepower old old pump with a 14 gallon or so pressure tank. Pump setting with old gage appeared to be 20-40. 26' deep well with casing...1 1/4 galvanized pump down into well. At ground level transitioned to 3/4 copper and zig zagged approximately 6 feet to pump with the copper. Here is what I'm trying to put in. I have installed 1 1/4 galvanized from ground level to pump. Teel 4P036A 1 1/2 horse power pump (Dayton number 4TB20). I have installed the shallow well ejector kit part number 2P429 with venturi, nozzle, and back flow to pump. New 42 gallon pressure tank air set to 28 pounds. New 30-50 pressure switch. New pressure gage. Here is the problem...I can only get up to 30 pounds of pressure on the gage no matter how long pump runs. I have a hose drain right by the pressure tank and can run water out of it all day long with the pump running at about 22 pounds of pressure. If I shut that off I will build to about 30 pounds of pressure. In order to get the pump to temporary function I have lowered both the cut in pressure and cut out pressure so pump will turn off. I have check for suction leaks with shaving cream at joints and all appears fine. The Teel pump is a used pump that was in service and operating fine. It is around 3 years old as far as I know. However, prior to me installing the pump it sat for 3-4 months on my porch. The only things I can think of are: Seal between motor and pump body dried up while sitting and pump is sucking air at that location. Possibly don't have enough water in the well to support this large of pressure tank and water draw? Are there any other possibilities? If not, is there some way to check for the above? Thank you in advance...hopefully someone has some ideas so I can get my water up and running to the house! Brad That 1.5 horsepower pump is going to pump alot more water than that old 1/2 hp pump did. Can the well support it? If the seal was dried out, and allowed the pump to suck air, it would also leak water. If there's no water leak, I doubt the seal is bad. Recheck all the connections on the suction line. It doesn't take but a very small leak to keep a pump from properly priming. Ron

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