I have a 9.9 Evinrude 1997 (E10FRELEUA) motor. On two occasions my motor would run for only two or three minutes without having to pump the bulb to keep it running. In both cases I bought a repair kit only to find that when I opened the pump I found that the small springs in the check valve came out of their hole along with the disk and container cap.This happen to both check valves in both pumps 4 years apart. I was able put the components back but was afraid to use the pumps again for fear the same thing would result. I purchase another fuel pump this time and was wondering if it is something I am doing or is it a poor design?? I have a sailboat so in 4 years the motor doesn't get much use except when the wind quits. Anybody have similar experience with the fuel pump with the following number (0435352) ??