wHEN YOUR XBOW IS COCKED WHERE DO'ES YOUR STRING SIT IN THE CENTER OF THE BOLT OR AT THE BOTTOM. RICH

Imho, they all should be in the center. If you're having problems, post which bow and arrow size.

Depends on your CB. My Horton sits just above center because of the barrel design. When it is shot, the arrow is lifted out of the barrel as it travels down it, Its called a micro flight barrel. I think only the Horton's with a machined aluminum barrel have this style.

Mines in the center had to check it can shoot in my garage now!