Last time, this summer, my grandson and I shot our muzzleloaders I didn't clean mine. Yesterday we started to shoot and I couldn't get the breech plug out, and the firing pin wouldn't strike the primer. I got out a can of PB Blaster and shot a little on the pin and the plug. After some hard twisting the plug finally moved and then the pin finally started working. Works fine now.. I won't make that mistake again..