GSG/ATI Firefly Issue

[D Bear]

I have a GSG Firefly, 22lr, and have many FTFs with bulk ammo (not CCI stingers)? There was supposed to be an extra spring for standard power ammo, but mine came with two of the same size springs. I contacted CS to request a standard spring. My question is does anyone have the firearm and does the other spring actually make a difference? I don't want to have to always use stingers just to use the pistol. I did try to smooth the feed ramp lip like others have suggested, but it definitely seems to be more of the slide not going back hard enough with bulk ammo due to a stiffer spring.

 

[Aguila Blanca]

A different spring is usually because standard-power ammo doesn't have enough oomph to eject reliably. If your pistol ejects, you don't need a different spring.