The hammer on my 1911 can be in 3 positions. Hammer down, quarter cocked, or fully cocked. Does any of these positions have adverse effects on the weapon? Does leaving the weapon locked and cocked too much cause problems? Does the quarter cocked cause undue stress for the weapon? Does leaving it hammer down compress the firing pin return spring? I'm relatively new to all the ins and outs of the 1911. thanks in advance