I have a cplc7060v compressor. I have replaced the check valve. The compressor runs until it gets to 40 psi and then the pump bogs down and stops running. The motor is still running, but the pump is not. I disconnected the tube from the check valve. The check valve is not leaking back. I then started the motor with the check valve disconnected and the pump works. Then I pushed the check valve tube back onto the pump and it slows down and stops. When it pull the check valve tub back off it starts again. Can you help?