Hi,
I've got a A&K Spring SVD that is meant to shoot over 480fps but when I first got it out of the box, it didn't fire very well due to the silly hopup system...
Eventually I took it apart to do some checking and when I reassembled it, It was only doing 320fps. I then did some cleaning, lube and teflon wrapping etc... new O-ring etc
Now it only seems to shoot 380fps at most...
I am not quite sure what is wrong because I have checked it over and over again...
Whew... maybe some expert advice on the matter?
