when I set the double set trigger and pull it there is a slight click noise then I have to pull it a bit more for the gun to shoot. Is this a problem or an adjustment or what ? Other wise the gun is like brand new with an excellent stock and barrel with a nice shiny bore. The owner says he shot it very little. He is including round balls, patches, patch lube, a new possibles leather bag and a round ball bag, short starter, wire brush, cleaning jag etc. Does $350.00 for everything sound like a good deal ?