Here's the scoop:
Just bought dream house
Deep well submersible.
Most likely original install from 1975 (27 years)
Well pump was cycling every 15 minutes, with no water in use
Pump was cutting in at 50 and turning off at 70
(Suspect regulator tuning sabotage from unscrupulous person)
I drained the system, tank was reading 15 pounds.
I replaced reg with a 30-50
I charged tank to 28
Tank held pressure 24 hours
Fired it up.
Pump now cuts in at 30 and drops out at 50
However......... Pump now cycles (problem obviously not fixed) every half hour
Should I just "man up" and pull the pump and replace the pipe and pump from there back to the tank?