I Support America, if you do too put this in your sig! ICD Owner's Group Member 96!!
If your parents DON'T pay for your paintball stuff, put this on your sig.
Make sure the guide or the little metal plate/disc is still behind it. If not the spring won't take tension right and the power will be low.
If that's not the problem, and replacing it isn't possible, take it out and stretch it by hand. It's temporary, but it should kick the velocity up a little.