Originally Posted by RobF
If the stabiliser has too much grip or preload it can prevent firing.
What he said
.....If the stabiliser had too much grip and therefore preload ........
You can reduce that indent on a stone but if you have excessive preload your ball bearing will be bashing the sear hard and the indent will come back quickly .
Try to reduce the drag to the minimum needed to do the job and set preload accordingly .
We,ve curled the new style Spring to a c shape and you may find you can get away with fewer than 3 of the little fellas