I can see a lot of experience behind all that, you're a real Jack of all Trades. How far down is the water table, and is it good water ? Have you had much of the recent rain. Looking forward to your next post.
Never EVER put grease on a Helical Rotor Pump, It’ll swell the rubber bit and burn your motor & controller out… It’s the Iron Bacteria in the water that’s caused the issue….