I dropped the drip tip from a BB last week and it rolled under a cabinet. It will be a major job to rescue it so it's on the to-do list. Meanwhile I grabbed one from the drip tip bag. Happened to be an old Pro tank tip which has the right sized hole for MTL. Those old Pro tank tips had a special feature. There's always a slight gap between the bottom of the tip and the top of the tank which is exactly the right size to catch a mustache hair and try to rip it out. I had forgotten about that fun part of the Pro Tank life.