Each time the gear box cyles, your shot to shot should slightly vary but not keep on dropping FPS unless there is something slowing it down.
A spring downgrade should not cause those problems.
The other problem that can happen, is you may have placed one too many shims from a gear to another causing binding to increase as you shoot more.
I suggest you take the gear box a part and recheck everything before you wreck your gun.
Last edited by SuperHog; July 22nd, 2012 at 11:56..
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