I have rebuilt my areator pump several times but it keeps burning out bearings. If my diffusers are not properly flowing , will that create a hot pump. I think that pump is over heating and making grease burn out of new bearings. Any other ideas?

First started with very little water pressure through out the house. One bathroom was a trickle.coming from the faucet, other bathroom was about a pencil width stream....onto trying to fix the problem First tried shutting off water supply from the well pump by turning the round wheel knob. Knob was stuck so I used a pipe wrench to get it to start turning. It kept turning clockwise for a good 2-3 minutes before I finally stopped...water was still coming so I hit the breaker for the well pump and that shut off the water. Then I drained the water from the pressure tank (Amtrol WX-202) and checked the pressure, it was at 30 psi so I added air until I got it to 38 psi which is written on top of the tank, I'm guessing by whoever installed the tank. Then I flipped the well pump breaker back on and the water started coming in again. The pressure gauge filled back up to between 50-60 psi which is what it read before all this. I turned the round wheel knob counter clockwise to fully open the water supply...again kept turning and turning and didn't seem like more or less water was coming in. (Knob and valvestem are turning, not just the knob) I came upstairs to check all the sinks and no change in the pressure...still the same BUT the pressure only lasted 20-30 sec then it was GONE. I ran downstairs and the gauge on the pressure tank was at zero. I checked the tank using a tire pressure gauge on top and it still read 38 psi. I shut off all the water and it sounded like the tank was refilling with water. Once it stopped, I turned the washer on and the water lasted for 10 sec MAX then came to a trickle....HELP!!!