The plastic tube / powder reservoir for my RL450B has come loose.  Luckily, I caught it before it dumped all the powder all over my reloading bench.  The plastic tube does not have any screws attaching it to the metal funnel upper portion of the powder measure, and instead apparently relied upon being glued into there since I see a thin irregular line of black on the inside of the metal funnel.  What would be the preferred glue to use to reattach the plastic tube to the metal funnel?  Or is there a different method used on the newer tubes that might be appropriate for this?