If something got hot enough to warp a fitting, then the pump may be damaged because the only source of heat in the water is the pump impeller.
You should check the pressure/flow specifications on your pump to see if it should get to 50 psi. Most shallow well jets in new condition will do 50 psi with 25 ft of lift, barely. If you get some degradation or air in the pipe the flow will stop and all that motor energy gets converted to heat in the impeller area. Goodby pump.
Something stuck in the throat of the jet nozzle will reduce the pressure capability.
If you want to get to 50 psi reliably, get a 60 psi pump and make sure you have no air leaks on the suction side. Also, be sure the well doesn't run out of water.