HI, hope someone can help. I have driven a 2" diameter galvanized pipe shallow well. I am 22' deep from surface with well point. I have a 3' well point, hooked to 5' sections of drive pipe with drive couplings. At the top section of pipe I have a T with a plug in the top and out the side go through the basement wall with a section of galvanized pipe (1 1/4" diameter) to a check valve then in to the 1 HP Jet pump (Fint walling). The pump is hooked to a pressure tank. I get good flow about 18 gpm and I have run the pump for an hour at full flow and still had no loss of flow. The problem is that I hear air at the checkvalve. I have replaced the check valve and still hear the air leak. I loose prime after a few minutes. I have re-tightened all fittings/ pipes above ground. Is my next step to pull the pipe out of the ground and remove each and then re-pipe dope then couple and put back in the hole?