I haven’t done anything to the well itself.
I have a pre-charged air tank and it is pressurized to 26lbs so it’s 4 lbs below the cut-in pressure.
And it’s set up with two pipes as a deep well pump.
I’ve decided the problem must be in the well. Probably the jet either got partially clogged or worn and that’s what burned out the first pump.
I’ll live with the low pressure (as long as it keeps working this way) and dig up the well in the spring when the ground isn’t quite so hard.
Thanks for your replies.