Sunday
,
22 Feb 2026 9:52pm
Sounds like simple air lock rather than a defect. With tight-fitting masts like the RRD RDM 340 mast, the ferrule can seal so well that trapped air makes the sections spring apart if you push them together quickly. Try assembling with a slow twisting motion to let the air escape and make sure everything is clean and dry. I wouldn't sand the ferrule unless it won't seat fully or becomes hard to separate after use, as removing material can create play later on.
