but you did not by any chance load 2 bullets into the gun did you? Just asking cause of the bolt not closing all the way. Loading 2 bullets will cause that very same thing to happen. And if you have a STOCK Corsair then no, that tapered spring in the airtube is not supposed to be hooked to the valve stem top hat. Sits just above the valve stem more than likely and its NOT a return spring.
But after this check....i would contact Randy ASAP!