Alright, so i'm stretching canvas, stapling the shits with a new staple gun, and the lever is completely jammed. It won't budge, no movement, no nothing. I've taken the little spring tray contraption where the staples go in, but that doesn't help either. Also, the gun is the Stanley cheapest brand. Or rather, the cheapest gun because I didn't want to buy the expensive one. But what the hell should I do? Stupid thing's stuck on the first day! BLAAAH!