Thanks for the link, I have noticed that there are two springs I have read about in the form one of them is the Tarantula 33 coil XLV FP Spring and the other is the E3650, can you tell me if they will fit my Shadow Sport and if there are any other springs James Maccari sells that will work in my Gamo. I have already bought and installed the GRT-III trigger It made a world of diffrence in my accuracy. Thanks in advance, PS I work the night shift