What you really need to do is rip out the shallow well pump, build a 2 bay manifold Foam brush manifold, install a air compressor to supply air to a
Flojet pump and to inject air into the Foam brush solution. As long as the pumping equipment pumps water then leave it alone. My pumping equipment was installed in 1982 and it still works like new today, I have very few problems with it. This is all that hard once you wrap your head around it.