Gerald,
It might be that since you are Puerto Rico you have an emasculated 48! See here in the good old US (okay mainland) we get the bigger, badder, more powerful version. I doubt you had a 12 FPE version but it is possible you have a combination weaker spring and longer piston rod to "detune" your 48?
By the way, don't let Gene get to you. I love Puerto Rico. My favorite resort is El Conquistador. Pretty swanky! No airguns.
Andy Wong aka larspawn