First, unscrew the cocking rod. It's composed of a thin metal rod with a slightly larger, but shorter, piece attached to the end. While doing so, make sure to grasp onto the thin metal rod, as the end piece uncrews by itself. It may take a deal of work to unscrew the rod, as WGP has a Loc-tite fetish. Note: A grasping tool with a barrier between itself and the rod (to prevent scarring) may be required. Once the rod has been fully removed, insert an allen wrench into vacant space left by it's former inhabitant. Turning the allen wrench clockwise increases velocity, while turning it counter-clockwise decreases velocity.
If you need a visual aid, just ask. I can whip something up quickly for you.
Trouble is like urine in a swimming pool - the only way to make sure you're not in someone elses' is to make a little of your own.
Don't piss down my back and tell me it's raining.
Digital pants - activate!