I HAVE THE MOST UNRELIABLE OLD ARMY THEY EVER MADE. JUST PUT IN NEW NIPPLES. DOES NOTHING FOR IT. I MUST GO AROUND ONE COMPLETE CYCLE AND THEY FIRE ON THE 2ND CYCLE. THE CAPS ARE SEATED ALL THE WAY ON THE NIPPLES. PIETTA'S AND UBERTI'S FIRE EVERY TIME. NO PROBLEM. MAY SELL THIS HUNK OF JUNK.