So I took a dremel to the plastic piece that had signs of wear thinking that it may not have been engaging properly. I shaved off the rounded tip to create a sharper edge.
This seemed to help but has not elelminated the issue.
The metal spring tangs are still attached and the plastic (drum) is not damaged where is hold the spring.
It might be time for a new assembly....
Last edited by Lockstock; 28/03/21 09:57 PM.