2 in deep well with 1 1/4 in drop pipe with Flotec 2" Single Pipe Jet Kit. Horizontal installation. I plan on replacing the 1hp Flotec Convertible Jet pump with either a Gould’s or Sta-Rite 1 hp convertible jet pump. Same setup. Question is, will another brand pump work ok with the Flotec 2" Single Pipe Jet Kit, All the pipes are the same size

I recently bought a home and have never had a well. I noticed that the well seemed to be cycling to often, finally it went out. I replaced the pressure switch (30/50) and got it going again. The same problem persisted so I took the following step. [list] [*]Checked tank pressure after shutting the water to the house off, turning power off and opening hose to empty tank. There was no pressure in the tank so I put in air up to 28 psi into the tank and restarted the system. I did let some air our to make sure no water was coming because I knew if that was the case the bladder was bad. This did not fix the issue. [/list] [list] [*]I adjusted the pressure switch to try to get the correct cut in and cut out points, did not work. [/list] [list] [*]Checked for a leaking bladder, it is not leaking. [/list] [list] [*]Checked all pipes within the well house for leaks, there were none [/list] Now here is what I am thinking is going on but need advise, I first thought that the check valve down in the well was bad. One think I have noticed is, I can shut the water to the house off and start the pump and it struggles to get to even 30 - 40 psi, once the pressure switch trips and turns pump off, the pressure goes to zero almost instantly. The fact that the pump is struggling to fill the tank makes me think that between the check valve and the bladder tank, there is a leak, so the pump struggles to push water since it is losing some of it on the way up. When the pump shuts off the water immediately drains back down to that leak. Currently since I just spent all of my money on buying this house and renovations it needed, so I can't afford to have a professional come out and pull the well. I am not sure if this is something I can do, but from reading, I believe I would need an A-frame and it is not a job for someone who knows little about wells. I also found an old above ground pump that is not working anymore. I was also wondering if the company that installed the current well used the same well pipe and left the old well and now the old well is causing the system not to keep pressure. I would think they would have removed this pump before installing a new pump. Any ideas? Here are some photos of the old pump I found, Thank you for any insight on what I can do to fix this. Thank you! [attach]111939[/attach] [attach]111940[/attach] [attach]111941[/attach]